Vintage Coach Hunter

{
    "is_handbag_probability": 0.99,
    "coach_probability": 0.02,
    "vintage_probability": 0.615,
    "authenticity_confidence": 0.02,
    "image_quality_score": 0.83,
    "seller_misidentification_probability": 0.03,
    "confidence": 0.905,
    "recommended_max_bid": 22.5,
    "estimated_resale_low": 20,
    "estimated_resale_high": 65,
    "possible_models": [],
    "positive_evidence": [
        "photo 1: clearly shows a structured handbag silhouette with a shoulder strap.",
        "photo 4: visible interior has a leather-like yellow lining, multiple card slots, and a zipper compartment.",
        "photo 5: zipper pull visibly reads GRETA, providing evidence for the seller's stated brand rather than Coach."
    ],
    "negative_evidence": [
        "photo 1: exterior is fully covered in ivory-colored fur, unlike the glove-tanned leather, suede, canvas, or modern Coach materials expected for Coach bags.",
        "photo 3: circular black-and-gold clasp is not a recognizable Coach turnlock.",
        "photo 5: zipper pull is branded GRETA, not COACH.",
        "photo 1: no Coach wordmark, carriage, or other visible Coach branding.",
        "photo 4: no Coach creed patch or Coach fabric tag is visible in the interior.",
        "photo 6: construction and fur exterior are inconsistent with the listed vintage Coach model catalog.",
        "photo 5: zipper pull legibly stamped GRETA, a non-Coach brand",
        "photo 1, photo 3: exterior fully encased in ivory\/white fur, not Coach glove-tanned cowhide",
        "photo 4: mustard-yellow leather lining with card slots, not unlined suede-back glove-tanned interior of vintage Coach classics",
        "photo 3, photo 6: kiss-frame with circular black cabochon clasp, no turnlock with Coach geometry present",
        "photo 1-6: no COACH wordmark, horse-and-carriage, creed patch, or hangtag visible"
    ],
    "missing_information": [
        "A straight-on photo of every interior wall and pocket, including any sewn-in brand label.",
        "Close-ups of the underside of the clasp, all hardware, and the full strap attachments.",
        "Photos of the mini mirror accessory and any labels or markings on it.",
        "Seller-stated provenance and documentation for the claimed 1980s production date, if available.",
        "No Coach creed patch visible in any photo - no close-up of interior back wall stamp to verify",
        "No bottom, side, or hardware brand stamps beyond GRETA pull shown",
        "Fur and lining material content unverified from photos alone"
    ],
    "authenticity_concerns": [
        "photo 5: visible GRETA branding indicates a different maker and is inconsistent with Coach manufacture.",
        "photo 1: fur construction and circular clasp are lookalike\/non-Coach features rather than Coach identifiers.",
        "photo 5: GRETA-branded zipper pull indicates non-Coach maker, not a Coach identifier",
        "No Coach creed, wordmark, horse-and-carriage, or solid-brass turnlock visible to support Coach manufacture"
    ],
    "possible_model_reasoning": [
        "The bag does not match a known Coach model because its fur exterior, circular clasp, yellow interior, and GRETA-marked zipper pull are inconsistent with the Coach catalog.",
        "The seller's 1980s claim is not independently verifiable from the photos; the era is therefore unknown.",
        "Condition appears approximately Very Good based on photo 1 and photo 3: fur looks full and intact with limited visible wear, though odor, hidden damage, and strap condition are unknown.",
        "Fur kiss-frame Greta purse incompatible with Coach classic glove-tanned turnlock catalog (City Bag, Willis, Court, etc.)",
        "GRETA hardware branding plus fur exterior and lined leather interior points to 1980s Greta evening purse, not Coach",
        "Era cannot be verified from photos alone; seller states 1980s but no Coach era identifiers apply",
        "Condition: Very Good; fur appears full and soft (photo 1, photo 3), interior clean (photo 4), light age-appropriate wear only"
    ],
    "estimated_era": "unknown",
    "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 3 and photo 6: circular gold-tone clasp with a glossy black central element; photo 5: small round metal GRETA zipper pull.",
        "leather_description": "photo 1 and photo 3: ivory\/cream fur exterior with white leather-like piping or trim; the exterior leather type is not determinable from the photos.",
        "lining_description": "photo 4 and photo 6: yellow\/mustard leather-like interior with multiple card slots and a zippered compartment.",
        "strap_construction": "photo 1 and photo 3: long narrow light-colored straps attached at the upper corners; exact material and attachment construction are not fully visible.",
        "stitching_description": "photo 4 and photo 6: visible stitching appears generally even along the light-colored trim, but detailed construction cannot be fully assessed."
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.0011,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.99,
                "coach_probability": 0.02,
                "vintage_probability": 0.58,
                "authenticity_confidence": 0.02,
                "image_quality_score": 0.91,
                "seller_misidentification_probability": 0.03,
                "estimated_era": "unknown",
                "possible_models": [],
                "positive_evidence": [
                    "photo 1: clearly shows a structured handbag silhouette with a shoulder strap.",
                    "photo 4: visible interior has a leather-like yellow lining, multiple card slots, and a zipper compartment.",
                    "photo 5: zipper pull visibly reads GRETA, providing evidence for the seller's stated brand rather than Coach."
                ],
                "negative_evidence": [
                    "photo 1: exterior is fully covered in ivory-colored fur, unlike the glove-tanned leather, suede, canvas, or modern Coach materials expected for Coach bags.",
                    "photo 3: circular black-and-gold clasp is not a recognizable Coach turnlock.",
                    "photo 5: zipper pull is branded GRETA, not COACH.",
                    "photo 1: no Coach wordmark, carriage, or other visible Coach branding.",
                    "photo 4: no Coach creed patch or Coach fabric tag is visible in the interior.",
                    "photo 6: construction and fur exterior are inconsistent with the listed vintage Coach model catalog."
                ],
                "missing_information": [
                    "A straight-on photo of every interior wall and pocket, including any sewn-in brand label.",
                    "Close-ups of the underside of the clasp, all hardware, and the full strap attachments.",
                    "Photos of the mini mirror accessory and any labels or markings on it.",
                    "Seller-stated provenance and documentation for the claimed 1980s production date, if available."
                ],
                "authenticity_concerns": [
                    "photo 5: visible GRETA branding indicates a different maker and is inconsistent with Coach manufacture.",
                    "photo 1: fur construction and circular clasp are lookalike\/non-Coach features rather than Coach identifiers."
                ],
                "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 3 and photo 6: circular gold-tone clasp with a glossy black central element; photo 5: small round metal GRETA zipper pull.",
                    "leather_description": "photo 1 and photo 3: ivory\/cream fur exterior with white leather-like piping or trim; the exterior leather type is not determinable from the photos.",
                    "lining_description": "photo 4 and photo 6: yellow\/mustard leather-like interior with multiple card slots and a zippered compartment.",
                    "strap_construction": "photo 1 and photo 3: long narrow light-colored straps attached at the upper corners; exact material and attachment construction are not fully visible.",
                    "stitching_description": "photo 4 and photo 6: visible stitching appears generally even along the light-colored trim, but detailed construction cannot be fully assessed."
                },
                "possible_model_reasoning": [
                    "The bag does not match a known Coach model because its fur exterior, circular clasp, yellow interior, and GRETA-marked zipper pull are inconsistent with the Coach catalog.",
                    "The seller's 1980s claim is not independently verifiable from the photos; the era is therefore unknown.",
                    "Condition appears approximately Very Good based on photo 1 and photo 3: fur looks full and intact with limited visible wear, though odor, hidden damage, and strap condition are unknown."
                ],
                "confidence": 0.91,
                "recommended_max_bid": 30,
                "estimated_resale_low": 20,
                "estimated_resale_high": 70
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [
                    "photo 5: GRETA-branded zipper pull indicates non-Coach maker, not a Coach identifier",
                    "No Coach creed, wordmark, horse-and-carriage, or solid-brass turnlock visible to support Coach manufacture"
                ],
                "authenticity_confidence": 0.02,
                "coach_probability": 0.02,
                "confidence": 0.9,
                "estimated_era": "unknown",
                "estimated_resale_high": 60,
                "estimated_resale_low": 20,
                "image_quality_score": 0.75,
                "is_handbag_probability": 0.99,
                "missing_information": [
                    "No Coach creed patch visible in any photo - no close-up of interior back wall stamp to verify",
                    "No bottom, side, or hardware brand stamps beyond GRETA pull shown",
                    "Fur and lining material content unverified from photos alone"
                ],
                "negative_evidence": [
                    "photo 5: zipper pull legibly stamped GRETA, a non-Coach brand",
                    "photo 1, photo 3: exterior fully encased in ivory\/white fur, not Coach glove-tanned cowhide",
                    "photo 4: mustard-yellow leather lining with card slots, not unlined suede-back glove-tanned interior of vintage Coach classics",
                    "photo 3, photo 6: kiss-frame with circular black cabochon clasp, no turnlock with Coach geometry present",
                    "photo 1-6: no COACH wordmark, horse-and-carriage, creed patch, or hangtag visible"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "gold-tone kiss-frame with round black cabochon clasp; gold-tone zipper with round GRETA-stamped pull (photo 5); no solid-brass Coach turnlock",
                    "leather_description": "white leather frame trim and thin straps; mustard-yellow smooth leather interior; exterior is ivory mink fur, not glove-tanned cowhide",
                    "lining_description": "mustard-yellow leather lining with slip compartments and card slots (photo 4), not unlined suede",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "thin white strap edge stitching visible (photo 3, photo 6); no heavy contrast Coach classic stitching observed",
                    "strap_construction": "thin double white leather shoulder straps, long drop, attached at frame sides (photo 2, photo 3)",
                    "turnlock_present": false
                },
                "positive_evidence": [],
                "possible_model_reasoning": [
                    "Fur kiss-frame Greta purse incompatible with Coach classic glove-tanned turnlock catalog (City Bag, Willis, Court, etc.)",
                    "GRETA hardware branding plus fur exterior and lined leather interior points to 1980s Greta evening purse, not Coach",
                    "Era cannot be verified from photos alone; seller states 1980s but no Coach era identifiers apply",
                    "Condition: Very Good; fur appears full and soft (photo 1, photo 3), interior clean (photo 4), light age-appropriate wear only"
                ],
                "possible_models": [],
                "recommended_max_bid": 15,
                "seller_misidentification_probability": 0.03,
                "vintage_probability": 0.65
            }
        }
    ],
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 18332,
            "output_tokens": 982,
            "total_tokens": 19314,
            "estimated_cost_usd": 0.00969
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 18898,
            "output_tokens": 1852,
            "total_tokens": 20750,
            "estimated_cost_usd": 0.005261
        }
    ]
}