Vintage Coach Hunter

{
    "is_handbag_probability": 0.98,
    "coach_probability": 0.035,
    "vintage_probability": 0.095,
    "authenticity_confidence": 0.04,
    "image_quality_score": 0.74,
    "seller_misidentification_probability": 0.035,
    "confidence": 0.74,
    "recommended_max_bid": 13.5,
    "estimated_resale_low": 15,
    "estimated_resale_high": 40,
    "possible_models": [],
    "positive_evidence": [
        "photo 1-6: small black leather shoulder handbag, a population where misidentified Coach can hide"
    ],
    "negative_evidence": [
        "photo 1: the bag has a contemporary multi-pocket satchel design with prominent silver-tone hardware, contrast stitching, and multiple front clasp pockets, not a recognizable vintage Coach silhouette.",
        "photo 1: no visible Coach wordmark, horse-and-carriage, creed patch, or leather Coach hangtag.",
        "photo 2: hardware is bright silver-tone and includes modern-looking decorative clasp hardware and large zipper pulls, inconsistent with typical 1970s\u2013early 1990s Coach classics.",
        "photos 1\u20133: the leather appears uniformly pebbled and heavily finished, with piping and contrast machine stitching more typical of a generic contemporary bag.",
        "photo 4: the back is plain and shows no visible Coach identifier.",
        "photos 5\u20136: the base and side construction do not show distinctive vintage Coach construction or hardware.",
        "photo 1-3: silver-tone \/ nickel hardware throughout, not solid brass vintage Coach hardware",
        "photo 1-3: front design with horizontal zip pocket plus two exterior flap pockets with small push\/tuck clasps, contrast off-white stitching, no match to vintage Coach catalog silhouettes",
        "photo 1-6: no COACH wordmark, horse-and-carriage, creed patch, or leather hangtag visible",
        "photo 4: plain back panel with no exterior slip pocket typical of many Coach flap classics",
        "photo 1-4: pebbled leather with glazed finish and contrast stitching unlike 1970s-1990s glove-tanned tone-on-tone construction"
    ],
    "missing_information": [
        "photo 1: interior is not shown; request a fully opened interior, interior wall, pockets, and any sewn-in labels.",
        "photo 1: request close-ups of every interior and exterior stamp, zipper pull, and hardware engraving.",
        "photo 1: seller-stated dimensions and material composition are not provided.",
        "photos 1\u20136: bottom corners, strap attachment points, and interior condition are not fully documented.",
        "photo 1-6: interior not shown, lining unknown, creed patch not shown",
        "photo 1-6: creed close-up in raking light and any fabric tags needed to verify maker",
        "photo 1-3: maker stamps on hardware, zipper-pull brand, and Made-in line not legible",
        "photo 1-6: hangtag both faces not shown",
        "seller-stated dimensions and scale reference not provided"
    ],
    "authenticity_concerns": [
        "The visible design and hardware are inconsistent with the classic vintage Coach construction described in the reference guide.",
        "No Coach identifier is visible in the supplied photos; this appears more likely to be a generic contemporary leather or coated-leather bag than a Coach product.",
        "The bright silver-tone hardware and decorative front clasps are inconsistent with the solid-brass hardware normally expected on vintage Coach classics; this is a concern, not definitive proof of a replica."
    ],
    "possible_model_reasoning": [
        "No Coach model is a reasonable match: the cargo-style front pockets, bright silver hardware, and modern finished construction do not correspond closely to the listed vintage Coach catalog silhouettes.",
        "Era assessment is based on visible construction only because no creed, serial, label, or interior is shown; the bag appears modern rather than pre-2000.",
        "Condition appears Very Good to Excellent externally: leather looks intact with no obvious major corner loss or tears in photos 1\u20136, but the interior and odor cannot be assessed.",
        "No Coach model match: multi-pocket zip-top with dual front flap push-locks and contrast stitching does not match City Bag (9790), Willis (9927), Court (9870), Station (5130) or other classics",
        "Era reasoning: nickel hardware, pebbled glazed leather and contrast stitching point to modern (2000s+) non-Coach mall-brand construction, not NYC\/US glove-tanned era",
        "Condition: Very Good to Excellent exterior; black pebbled leather intact, corners show light wear only (photo 5-6), hardware bright, strap intact; capped because interior, bottom and odor not shown"
    ],
    "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": "Bright silver-tone metal hardware, multiple zipper pulls, and two decorative front clasp closures visible in photos 1\u20133; no Coach engraving is legible.",
        "leather_description": "Black pebbled, glossy\/finished-looking material described by the seller as leather; the photos cannot establish whether it is genuine leather, bonded leather, or synthetic.",
        "lining_description": "not_visible",
        "strap_construction": "Adjustable black shoulder strap with contrast stitching, punched adjustment holes, metal buckle hardware, and attached side rings visible in photos 1, 3, and 4.",
        "stitching_description": "Visible contrast cream stitching is generally even but prominent and decorative, especially around the front pockets and strap; detailed stress-point stitching is not fully assessable."
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.0018,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.98,
                "coach_probability": 0.03,
                "vintage_probability": 0.04,
                "authenticity_confidence": 0.03,
                "image_quality_score": 0.83,
                "seller_misidentification_probability": 0.03,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [],
                "negative_evidence": [
                    "photo 1: the bag has a contemporary multi-pocket satchel design with prominent silver-tone hardware, contrast stitching, and multiple front clasp pockets, not a recognizable vintage Coach silhouette.",
                    "photo 1: no visible Coach wordmark, horse-and-carriage, creed patch, or leather Coach hangtag.",
                    "photo 2: hardware is bright silver-tone and includes modern-looking decorative clasp hardware and large zipper pulls, inconsistent with typical 1970s\u2013early 1990s Coach classics.",
                    "photos 1\u20133: the leather appears uniformly pebbled and heavily finished, with piping and contrast machine stitching more typical of a generic contemporary bag.",
                    "photo 4: the back is plain and shows no visible Coach identifier.",
                    "photos 5\u20136: the base and side construction do not show distinctive vintage Coach construction or hardware."
                ],
                "missing_information": [
                    "photo 1: interior is not shown; request a fully opened interior, interior wall, pockets, and any sewn-in labels.",
                    "photo 1: request close-ups of every interior and exterior stamp, zipper pull, and hardware engraving.",
                    "photo 1: seller-stated dimensions and material composition are not provided.",
                    "photos 1\u20136: bottom corners, strap attachment points, and interior condition are not fully documented."
                ],
                "authenticity_concerns": [
                    "The visible design and hardware are inconsistent with the classic vintage Coach construction described in the reference guide.",
                    "No Coach identifier is visible in the supplied photos; this appears more likely to be a generic contemporary leather or coated-leather bag than a Coach product.",
                    "The bright silver-tone hardware and decorative front clasps are inconsistent with the solid-brass hardware normally expected on vintage Coach classics; this is a concern, not definitive proof of a replica."
                ],
                "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": "Bright silver-tone metal hardware, multiple zipper pulls, and two decorative front clasp closures visible in photos 1\u20133; no Coach engraving is legible.",
                    "leather_description": "Black pebbled, glossy\/finished-looking material described by the seller as leather; the photos cannot establish whether it is genuine leather, bonded leather, or synthetic.",
                    "lining_description": "not_visible",
                    "strap_construction": "Adjustable black shoulder strap with contrast stitching, punched adjustment holes, metal buckle hardware, and attached side rings visible in photos 1, 3, and 4.",
                    "stitching_description": "Visible contrast cream stitching is generally even but prominent and decorative, especially around the front pockets and strap; detailed stress-point stitching is not fully assessable."
                },
                "possible_model_reasoning": [
                    "No Coach model is a reasonable match: the cargo-style front pockets, bright silver hardware, and modern finished construction do not correspond closely to the listed vintage Coach catalog silhouettes.",
                    "Era assessment is based on visible construction only because no creed, serial, label, or interior is shown; the bag appears modern rather than pre-2000.",
                    "Condition appears Very Good to Excellent externally: leather looks intact with no obvious major corner loss or tears in photos 1\u20136, but the interior and odor cannot be assessed."
                ],
                "confidence": 0.78,
                "recommended_max_bid": 15,
                "estimated_resale_low": 15,
                "estimated_resale_high": 45
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [],
                "authenticity_confidence": 0.05,
                "coach_probability": 0.04,
                "confidence": 0.7,
                "estimated_era": "modern (2000s+), non-Coach",
                "estimated_resale_high": 35,
                "estimated_resale_low": 15,
                "image_quality_score": 0.65,
                "is_handbag_probability": 0.98,
                "missing_information": [
                    "photo 1-6: interior not shown, lining unknown, creed patch not shown",
                    "photo 1-6: creed close-up in raking light and any fabric tags needed to verify maker",
                    "photo 1-3: maker stamps on hardware, zipper-pull brand, and Made-in line not legible",
                    "photo 1-6: hangtag both faces not shown",
                    "seller-stated dimensions and scale reference not provided"
                ],
                "negative_evidence": [
                    "photo 1-3: silver-tone \/ nickel hardware throughout, not solid brass vintage Coach hardware",
                    "photo 1-3: front design with horizontal zip pocket plus two exterior flap pockets with small push\/tuck clasps, contrast off-white stitching, no match to vintage Coach catalog silhouettes",
                    "photo 1-6: no COACH wordmark, horse-and-carriage, creed patch, or leather hangtag visible",
                    "photo 4: plain back panel with no exterior slip pocket typical of many Coach flap classics",
                    "photo 1-4: pebbled leather with glazed finish and contrast stitching unlike 1970s-1990s glove-tanned tone-on-tone construction"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "silver-tone hardware: top zip with rectangular pull, front horizontal zip with large rectangular pull, two small front flap push\/tuck clasps, strap buckle, D-rings and rivets; bright plated appearance, not solid brass vintage turnlock geometry",
                    "leather_description": "black pebbled leather with glazed sheen visible in photo 1-6",
                    "lining_description": "not_visible",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "contrasting off-white \/ tan topstitching around front pockets, zips and strap edges visible photo 1-3",
                    "strap_construction": "narrow black pebbled shoulder strap with contrast edge stitching, buckle-adjustable with eyelets and riveted anchor tabs, photo 2-3",
                    "turnlock_present": false
                },
                "positive_evidence": [
                    "photo 1-6: small black leather shoulder handbag, a population where misidentified Coach can hide"
                ],
                "possible_model_reasoning": [
                    "No Coach model match: multi-pocket zip-top with dual front flap push-locks and contrast stitching does not match City Bag (9790), Willis (9927), Court (9870), Station (5130) or other classics",
                    "Era reasoning: nickel hardware, pebbled glazed leather and contrast stitching point to modern (2000s+) non-Coach mall-brand construction, not NYC\/US glove-tanned era",
                    "Condition: Very Good to Excellent exterior; black pebbled leather intact, corners show light wear only (photo 5-6), hardware bright, strap intact; capped because interior, bottom and odor not shown"
                ],
                "possible_models": [],
                "recommended_max_bid": 12,
                "seller_misidentification_probability": 0.04,
                "vintage_probability": 0.15
            }
        }
    ],
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 25361,
            "output_tokens": 870,
            "total_tokens": 26231,
            "estimated_cost_usd": 0.012232
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 26239,
            "output_tokens": 1521,
            "total_tokens": 27760,
            "estimated_cost_usd": 0.006465
        }
    ]
}