Vintage Coach Hunter

{
    "is_handbag_probability": 0.99,
    "coach_probability": 0.045,
    "vintage_probability": 0.465,
    "authenticity_confidence": 0.035,
    "image_quality_score": 0.79,
    "seller_misidentification_probability": 0.47,
    "confidence": 0.835,
    "recommended_max_bid": 13.5,
    "estimated_resale_low": 12.5,
    "estimated_resale_high": 37.5,
    "possible_models": [],
    "positive_evidence": [
        "photo 1: clearly a leather shoulder handbag with substantial brass-tone hardware.",
        "photo 1: brown leather, rounded construction, and aged-looking hardware are broadly compatible with vintage leather goods, but not specifically Coach.",
        "photo 2: the shoulder strap and side construction appear substantial and handmade-looking.",
        "photo 1-5: leather handbag with brass-tone hardware in brown, general population where vintage could hide",
        "photo 1-5: soft patinated leather with edge wear consistent with genuine leather age"
    ],
    "negative_evidence": [
        "photo 1: the oversized circular front ring closure is not a recognizable classic Coach turnlock or catalog silhouette.",
        "photo 1: prominent thick contrasting saddle-style stitching and riveted strap attachments are unlike the typical clean, tone-on-tone construction of classic Coach bags.",
        "photo 1: no visible Coach wordmark, horse-and-carriage mark, hangtag, or creed patch.",
        "photo 3: the back is unbranded and lacks visible Coach identifiers.",
        "photo 5: the bag has a broad, padded base and handmade boho construction rather than a clearly identifiable Coach model.",
        "listing text: seller identifies the bag as CW Brown Italian leather, not Coach; this is weak but consistent with the visible non-Coach construction.",
        "photo 1-6: no COACH wordmark, horse-and-carriage, creed patch, or leather hangtag visible",
        "photo 1,6: closure is large brass O-ring looped through flap, not Coach turnlock geometry",
        "photo 1-4: coarse exposed saddle-stitching around flap and body edges, not Coach tight matched stitching",
        "photo 1-4: silhouette with triangular flap extension and ring closure matches no Coach catalog style",
        "photo 2,4: strap attaches via large brass rings with exposed rivets, not Coach dogleash clips or buckle-adjust construction"
    ],
    "missing_information": [
        "photo 6: interior emptied and photographed clearly, including the back wall, slip pocket, and any sewn-in brand or creed patch.",
        "photo 7: close-up of any interior or exterior maker label, stamp, or fabric tag.",
        "photo 8: complete strap ends, hardware backs, and any hidden markings.",
        "photo 9: measurements and a clearer view of the closure mechanism from above.",
        "interior views emptied showing lining and any creed patch or fabric labels (photos show exterior only)",
        "close-up of any maker stamp, creed patch, or interior pocket tag",
        "bottom corners close-up and strap hardware stamps",
        "seller-stated dimensions and scale reference"
    ],
    "authenticity_concerns": [
        "photo 1: the large ring-and-flap closure is a generic or maker-specific design, not evidence of Coach manufacture.",
        "photos 1-6: no Coach identifier is visible across the available exterior views; the construction is more consistent with an independent Italian leather or boho maker."
    ],
    "possible_model_reasoning": [
        "No Coach model is a reasonable match: the circular ring closure, heavy decorative stitching, and boho silhouette do not correspond closely to the listed classic Coach models.",
        "The seller's Italian-leather description is not verifiable from the photos, but the bag appears more likely to be an independent vintage leather design than Coach.",
        "Condition: Good; visible edge wear, scratches, creasing, and hardware wear are present in photos 1, 3, 5, and 6; interior condition and odor are unknown.",
        "No Coach model fits: ring-flap closure, exposed coarse stitching, riveted ring strap attachments are inconsistent with City Bag, Willis, Court, Station, Dinky or other classics",
        "Seller attributes bag to CW Brown \/ Italy, no Coach identifiers to decode for era; construction suggests modern boho \/ handmade non-Coach bag",
        "Condition: Very Good to Good; surface scuffs and edge wear visible (photo 3,5), corners soft but intact, interior and strap fold not shown so capped"
    ],
    "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": "photos 1-6: aged brass-tone circular ring closure, smaller circular strap rings, and visible rivets; no Coach engraving is visible.",
        "leather_description": "photos 1-6: brown smooth-to-lightly grained leather with thick padded panels; visible edge rubbing, scratches, and surface wear.",
        "lining_description": "not_visible",
        "strap_construction": "photos 2 and 4: wide adjustable-looking leather shoulder strap with layered or padded construction and visible stitching; attachment uses circular rings and riveted leather tabs.",
        "stitching_description": "photos 1-6: thick, widely spaced dark stitching around panel edges and flap, with additional visible hand-sewn-looking stitching on the strap."
    },
    "ensemble_agreement": "MEDIUM",
    "ensemble_variance": 0.0356,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.99,
                "coach_probability": 0.06,
                "vintage_probability": 0.68,
                "authenticity_confidence": 0.04,
                "image_quality_score": 0.88,
                "seller_misidentification_probability": 0.91,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [
                    "photo 1: clearly a leather shoulder handbag with substantial brass-tone hardware.",
                    "photo 1: brown leather, rounded construction, and aged-looking hardware are broadly compatible with vintage leather goods, but not specifically Coach.",
                    "photo 2: the shoulder strap and side construction appear substantial and handmade-looking."
                ],
                "negative_evidence": [
                    "photo 1: the oversized circular front ring closure is not a recognizable classic Coach turnlock or catalog silhouette.",
                    "photo 1: prominent thick contrasting saddle-style stitching and riveted strap attachments are unlike the typical clean, tone-on-tone construction of classic Coach bags.",
                    "photo 1: no visible Coach wordmark, horse-and-carriage mark, hangtag, or creed patch.",
                    "photo 3: the back is unbranded and lacks visible Coach identifiers.",
                    "photo 5: the bag has a broad, padded base and handmade boho construction rather than a clearly identifiable Coach model.",
                    "listing text: seller identifies the bag as CW Brown Italian leather, not Coach; this is weak but consistent with the visible non-Coach construction."
                ],
                "missing_information": [
                    "photo 6: interior emptied and photographed clearly, including the back wall, slip pocket, and any sewn-in brand or creed patch.",
                    "photo 7: close-up of any interior or exterior maker label, stamp, or fabric tag.",
                    "photo 8: complete strap ends, hardware backs, and any hidden markings.",
                    "photo 9: measurements and a clearer view of the closure mechanism from above."
                ],
                "authenticity_concerns": [
                    "photo 1: the large ring-and-flap closure is a generic or maker-specific design, not evidence of Coach manufacture.",
                    "photos 1-6: no Coach identifier is visible across the available exterior views; the construction is more consistent with an independent Italian leather or boho maker."
                ],
                "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": "photos 1-6: aged brass-tone circular ring closure, smaller circular strap rings, and visible rivets; no Coach engraving is visible.",
                    "leather_description": "photos 1-6: brown smooth-to-lightly grained leather with thick padded panels; visible edge rubbing, scratches, and surface wear.",
                    "lining_description": "not_visible",
                    "strap_construction": "photos 2 and 4: wide adjustable-looking leather shoulder strap with layered or padded construction and visible stitching; attachment uses circular rings and riveted leather tabs.",
                    "stitching_description": "photos 1-6: thick, widely spaced dark stitching around panel edges and flap, with additional visible hand-sewn-looking stitching on the strap."
                },
                "possible_model_reasoning": [
                    "No Coach model is a reasonable match: the circular ring closure, heavy decorative stitching, and boho silhouette do not correspond closely to the listed classic Coach models.",
                    "The seller's Italian-leather description is not verifiable from the photos, but the bag appears more likely to be an independent vintage leather design than Coach.",
                    "Condition: Good; visible edge wear, scratches, creasing, and hardware wear are present in photos 1, 3, 5, and 6; interior condition and odor are unknown."
                ],
                "confidence": 0.87,
                "recommended_max_bid": 12,
                "estimated_resale_low": 10,
                "estimated_resale_high": 40
            }
        },
        {
            "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": 35,
                "estimated_resale_low": 15,
                "image_quality_score": 0.7,
                "is_handbag_probability": 0.99,
                "missing_information": [
                    "interior views emptied showing lining and any creed patch or fabric labels (photos show exterior only)",
                    "close-up of any maker stamp, creed patch, or interior pocket tag",
                    "bottom corners close-up and strap hardware stamps",
                    "seller-stated dimensions and scale reference"
                ],
                "negative_evidence": [
                    "photo 1-6: no COACH wordmark, horse-and-carriage, creed patch, or leather hangtag visible",
                    "photo 1,6: closure is large brass O-ring looped through flap, not Coach turnlock geometry",
                    "photo 1-4: coarse exposed saddle-stitching around flap and body edges, not Coach tight matched stitching",
                    "photo 1-4: silhouette with triangular flap extension and ring closure matches no Coach catalog style",
                    "photo 2,4: strap attaches via large brass rings with exposed rivets, not Coach dogleash clips or buckle-adjust construction"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "brass-tone large O-rings at flap tip and shoulder strap anchors, small dome rivets on back panel; aged patina, no COACH engraving visible",
                    "leather_description": "medium tan-brown soft leather, thick feel with surface wear and scuffs, visible grain",
                    "lining_description": "not_visible",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "heavy exposed dark saddle-stitching around flap perimeter, front pocket and side seams, widely spaced and contrasting",
                    "strap_construction": "narrow flat leather shoulder strap looped through brass rings, stitched edges, no buckle adjustment or dogleash clips visible",
                    "turnlock_present": false
                },
                "positive_evidence": [
                    "photo 1-5: leather handbag with brass-tone hardware in brown, general population where vintage could hide",
                    "photo 1-5: soft patinated leather with edge wear consistent with genuine leather age"
                ],
                "possible_model_reasoning": [
                    "No Coach model fits: ring-flap closure, exposed coarse stitching, riveted ring strap attachments are inconsistent with City Bag, Willis, Court, Station, Dinky or other classics",
                    "Seller attributes bag to CW Brown \/ Italy, no Coach identifiers to decode for era; construction suggests modern boho \/ handmade non-Coach bag",
                    "Condition: Very Good to Good; surface scuffs and edge wear visible (photo 3,5), corners soft but intact, interior and strap fold not shown so capped"
                ],
                "possible_models": [],
                "recommended_max_bid": 15,
                "seller_misidentification_probability": 0.03,
                "vintage_probability": 0.25
            }
        }
    ],
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 17804,
            "output_tokens": 858,
            "total_tokens": 18662,
            "estimated_cost_usd": 0.009181
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 18142,
            "output_tokens": 1220,
            "total_tokens": 19362,
            "estimated_cost_usd": 0.004604
        }
    ]
}