Vintage Coach Hunter

{
    "is_handbag_probability": 0.98,
    "coach_probability": 0.185,
    "vintage_probability": 0.48,
    "authenticity_confidence": 0.14,
    "image_quality_score": 0.76,
    "seller_misidentification_probability": 0.185,
    "confidence": 0.74,
    "recommended_max_bid": 13.5,
    "estimated_resale_low": 15,
    "estimated_resale_high": 42.5,
    "possible_models": [
        "Saddle Bag (style number not visible)"
    ],
    "positive_evidence": [
        "photo 1: Leather crossbody handbag with a curved saddle-style silhouette and burgundy glove-tanned-looking leather.",
        "photo 1: Solid-looking brass-tone rings and zipper hardware, a construction feature compatible with some vintage Coach bags.",
        "photo 4: The zipper pull appears to have an indistinct stamped marking, but it is not legible enough to identify as Coach or another maker.",
        "photo 6: Interior appears to be raw leather\/suede rather than printed synthetic lining, which is compatible with some early Coach construction.",
        "photo 1-6: leather small crossbody handbag with brass-tone hardware",
        "photo 6: unlined leather interior as seen on some vintage bags",
        "photo 4: YKK zipper, a maker also used by Coach in 1990s"
    ],
    "negative_evidence": [
        "photo 1: No legible COACH wordmark, horse-and-carriage mark, leather hangtag, creed patch, or serial number is visible.",
        "photo 3: The thin lace-style strap and unusual external vertical leather panels are not sufficient to establish a Coach catalog match.",
        "photo 4: Hardware marking is too indistinct to verify a Coach-compatible zipper brand or era.",
        "Listing text: Seller describes the item as unbranded and provides no Coach-specific provenance; this is weak evidence only.",
        "photo 1, photo 2: back shows two vertical belt-loop tabs and thin lace strap through eyelets - never a Coach construction",
        "photo 6: snap-button closure with unlined interior and no creed patch - Coach classics use turnlock flap with creed on back wall or slip pocket",
        "photo 3, photo 4: exterior front zip pocket on flap with YKK-marked pull and leather tassel - not a Coach catalog silhouette",
        "photo 1-6: no turnlock, no hangtag, no COACH wordmark or horse-and-carriage visible anywhere",
        "photo 3, photo 4: distressed thin pebbled leather with contrast stitching and lace strap - not glove-tanned classic construction with brass dogleash\/buckle strap"
    ],
    "missing_information": [
        "A straight-on, close photograph of every interior wall and pocket, including any small leather creed patch or fabric tag.",
        "Close-ups of the zipper pull, snap hardware, strap attachments, and any markings on the reverse of the hardware.",
        "Full interior compartment photographs and bottom\/corner views.",
        "Full strap-length photograph showing construction, stitching, and adjustment details.",
        "Any provenance, original purchase information, or measurements including depth.",
        "no Coach creed patch visible in any photo - interior shown empty in photo 6 with no patch",
        "no hangtag, wordmark, or branded hardware visible to support Coach",
        "no bottom, side gusset, or hardware stamp close-ups beyond zipper"
    ],
    "authenticity_concerns": [
        "No Coach identifier is visible, so the bag may be an unbranded vintage leather saddle bag rather than Coach.",
        "The silhouette alone is widely copied and cannot authenticate a Coach origin.",
        "The thin lace strap and construction do not clearly match a documented Coach classic model from the available views."
    ],
    "possible_model_reasoning": [
        "The curved saddle silhouette could loosely resemble a vintage Coach Saddle Bag, but no style number, creed, hangtag, or wordmark supports that identification.",
        "The raw-leather interior and brass-tone hardware suggest an older leather construction, but there is insufficient identifier evidence to assign a Coach era.",
        "Condition: Good; visible surface scratches, creasing, discoloration, and edge wear are present in photos 1-6. Strap integrity and any odor or mold are unknown.",
        "No Coach catalog match: size ~6-7 in wide saddle with front flap zip and lace strap does not correspond to Dinky (9375), Pocket Purse (9755), Mini Hobo or other small crossbody styles",
        "No hard identifiers: no creed, no serial, no wordmark, no turnlock, no hangtag, no solid-brass Coach hardware geometry",
        "Construction inconsistent with Coach: snap closure, belt-loop tabs on back, lace strap through eyelets, distressed thin leather",
        "Condition: Good to Very Good; surface wear and patina consistent with use, no major tears visible, strap thin but intact (photos 1-5), interior unmarked (photo 6)"
    ],
    "estimated_era": "modern (2000s+), non-Coach",
    "observed_features": {
        "creed_present": false,
        "serial_or_style_number_present": false,
        "coach_wordmark_present": false,
        "turnlock_present": false,
        "hangtag_present": false,
        "creed_text": "not_visible",
        "serial_or_style_number": "not_visible",
        "hardware_description": "photo 1: Brass-tone zipper and snap\/ring hardware are visible; photo 4: zipper pull has an indistinct marking that cannot be read. No turnlock or Coach engraving is visible.",
        "leather_description": "photo 1: Burgundy\/reddish-brown leather with visible grain, creasing, scratches, and distressed surface wear.",
        "lining_description": "photo 6: Interior appears to be unlined leather or suede-backed leather; no fabric lining or creed patch is visible in the shown open view.",
        "strap_construction": "photos 1 and 5: Thin leather lace-style crossbody strap attached through small side rings; adjustment method and full construction are not fully shown.",
        "stitching_description": "photos 1-5: Dark, visible perimeter stitching appears generally even, with some wear and irregularity around attachments."
    },
    "ensemble_agreement": "MEDIUM",
    "ensemble_variance": 0.0208,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.98,
                "coach_probability": 0.34,
                "vintage_probability": 0.76,
                "authenticity_confidence": 0.25,
                "image_quality_score": 0.82,
                "seller_misidentification_probability": 0.34,
                "estimated_era": "unknown",
                "possible_models": [
                    "Saddle Bag (style number not visible)"
                ],
                "positive_evidence": [
                    "photo 1: Leather crossbody handbag with a curved saddle-style silhouette and burgundy glove-tanned-looking leather.",
                    "photo 1: Solid-looking brass-tone rings and zipper hardware, a construction feature compatible with some vintage Coach bags.",
                    "photo 4: The zipper pull appears to have an indistinct stamped marking, but it is not legible enough to identify as Coach or another maker.",
                    "photo 6: Interior appears to be raw leather\/suede rather than printed synthetic lining, which is compatible with some early Coach construction."
                ],
                "negative_evidence": [
                    "photo 1: No legible COACH wordmark, horse-and-carriage mark, leather hangtag, creed patch, or serial number is visible.",
                    "photo 3: The thin lace-style strap and unusual external vertical leather panels are not sufficient to establish a Coach catalog match.",
                    "photo 4: Hardware marking is too indistinct to verify a Coach-compatible zipper brand or era.",
                    "Listing text: Seller describes the item as unbranded and provides no Coach-specific provenance; this is weak evidence only."
                ],
                "missing_information": [
                    "A straight-on, close photograph of every interior wall and pocket, including any small leather creed patch or fabric tag.",
                    "Close-ups of the zipper pull, snap hardware, strap attachments, and any markings on the reverse of the hardware.",
                    "Full interior compartment photographs and bottom\/corner views.",
                    "Full strap-length photograph showing construction, stitching, and adjustment details.",
                    "Any provenance, original purchase information, or measurements including depth."
                ],
                "authenticity_concerns": [
                    "No Coach identifier is visible, so the bag may be an unbranded vintage leather saddle bag rather than Coach.",
                    "The silhouette alone is widely copied and cannot authenticate a Coach origin.",
                    "The thin lace strap and construction do not clearly match a documented Coach classic model from the available views."
                ],
                "observed_features": {
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "serial_or_style_number_present": false,
                    "serial_or_style_number": "not_visible",
                    "coach_wordmark_present": false,
                    "turnlock_present": false,
                    "hangtag_present": false,
                    "hardware_description": "photo 1: Brass-tone zipper and snap\/ring hardware are visible; photo 4: zipper pull has an indistinct marking that cannot be read. No turnlock or Coach engraving is visible.",
                    "leather_description": "photo 1: Burgundy\/reddish-brown leather with visible grain, creasing, scratches, and distressed surface wear.",
                    "lining_description": "photo 6: Interior appears to be unlined leather or suede-backed leather; no fabric lining or creed patch is visible in the shown open view.",
                    "strap_construction": "photos 1 and 5: Thin leather lace-style crossbody strap attached through small side rings; adjustment method and full construction are not fully shown.",
                    "stitching_description": "photos 1-5: Dark, visible perimeter stitching appears generally even, with some wear and irregularity around attachments."
                },
                "possible_model_reasoning": [
                    "The curved saddle silhouette could loosely resemble a vintage Coach Saddle Bag, but no style number, creed, hangtag, or wordmark supports that identification.",
                    "The raw-leather interior and brass-tone hardware suggest an older leather construction, but there is insufficient identifier evidence to assign a Coach era.",
                    "Condition: Good; visible surface scratches, creasing, discoloration, and edge wear are present in photos 1-6. Strap integrity and any odor or mold are unknown."
                ],
                "confidence": 0.68,
                "recommended_max_bid": 15,
                "estimated_resale_low": 20,
                "estimated_resale_high": 60
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [],
                "authenticity_confidence": 0.03,
                "coach_probability": 0.03,
                "confidence": 0.8,
                "estimated_era": "modern (2000s+), non-Coach",
                "estimated_resale_high": 25,
                "estimated_resale_low": 10,
                "image_quality_score": 0.7,
                "is_handbag_probability": 0.98,
                "missing_information": [
                    "no Coach creed patch visible in any photo - interior shown empty in photo 6 with no patch",
                    "no hangtag, wordmark, or branded hardware visible to support Coach",
                    "no bottom, side gusset, or hardware stamp close-ups beyond zipper"
                ],
                "negative_evidence": [
                    "photo 1, photo 2: back shows two vertical belt-loop tabs and thin lace strap through eyelets - never a Coach construction",
                    "photo 6: snap-button closure with unlined interior and no creed patch - Coach classics use turnlock flap with creed on back wall or slip pocket",
                    "photo 3, photo 4: exterior front zip pocket on flap with YKK-marked pull and leather tassel - not a Coach catalog silhouette",
                    "photo 1-6: no turnlock, no hangtag, no COACH wordmark or horse-and-carriage visible anywhere",
                    "photo 3, photo 4: distressed thin pebbled leather with contrast stitching and lace strap - not glove-tanned classic construction with brass dogleash\/buckle strap"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "brass-tone snap, brass eyelets, brass YKK zip with leather pull tab; no turnlock, no buckle, no dogleash clips",
                    "leather_description": "burgundy \/ oxblood distressed pebbled leather with vintage-inspired worn finish, ~6-7 in wide per tape",
                    "lining_description": "unlined leather interior visible in photo 6, no fabric lining",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "dark contrast stitching around edges and flap, even but not Coach-matched thread style",
                    "strap_construction": "very thin flat leather lace crossbody strap threaded through eyelets with knot, not adjustable buckle or detachable Coach strap",
                    "turnlock_present": false
                },
                "positive_evidence": [
                    "photo 1-6: leather small crossbody handbag with brass-tone hardware",
                    "photo 6: unlined leather interior as seen on some vintage bags",
                    "photo 4: YKK zipper, a maker also used by Coach in 1990s"
                ],
                "possible_model_reasoning": [
                    "No Coach catalog match: size ~6-7 in wide saddle with front flap zip and lace strap does not correspond to Dinky (9375), Pocket Purse (9755), Mini Hobo or other small crossbody styles",
                    "No hard identifiers: no creed, no serial, no wordmark, no turnlock, no hangtag, no solid-brass Coach hardware geometry",
                    "Construction inconsistent with Coach: snap closure, belt-loop tabs on back, lace strap through eyelets, distressed thin leather",
                    "Condition: Good to Very Good; surface wear and patina consistent with use, no major tears visible, strap thin but intact (photos 1-5), interior unmarked (photo 6)"
                ],
                "possible_models": [],
                "recommended_max_bid": 12,
                "seller_misidentification_probability": 0.03,
                "vintage_probability": 0.2
            }
        }
    ],
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 18219,
            "output_tokens": 1026,
            "total_tokens": 19245,
            "estimated_cost_usd": 0.00975
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 18777,
            "output_tokens": 1250,
            "total_tokens": 20027,
            "estimated_cost_usd": 0.004755
        }
    ]
}