Vintage Coach Hunter

{
    "is_handbag_probability": 0.985,
    "coach_probability": 0.02,
    "vintage_probability": 0.015,
    "authenticity_confidence": 0.02,
    "image_quality_score": 0.74,
    "seller_misidentification_probability": 0.07,
    "confidence": 0.885,
    "recommended_max_bid": 6.5,
    "estimated_resale_low": 5,
    "estimated_resale_high": 22.5,
    "possible_models": [],
    "positive_evidence": [],
    "negative_evidence": [
        "photo 1: bag is a lightweight navy synthetic\/nylon-looking messenger crossbody, matching the seller's 'waterproof' and 'lightweight' description rather than vintage Coach glove-tanned leather.",
        "photo 1: visible silver-tone circular front emblem does not legibly show COACH or a Coach horse-and-carriage.",
        "photo 1: broad webbing strap, silver-tone rectangular adjuster, gathered side pockets, and modern soft construction are inconsistent with the classic vintage Coach leather handbag population.",
        "photo 1-2: navy waterproof nylon \/ synthetic body, not glove-tanned leather",
        "photo 1-2: wide woven webbing crossbody strap with silver-tone slider, not leather Coach strap with brass hardware",
        "photo 2: silver-tone plated hardware throughout, not solid brass vintage hardware",
        "photo 1-2: modern lightweight messenger \/ hobo silhouette with elastic side pockets, no Coach catalog silhouette match",
        "photo 1-2: no creed patch, no COACH wordmark, no horse-and-carriage, no leather hangtag visible"
    ],
    "missing_information": [
        "photo 1: interior, lining, creed area, fabric tags, zipper pulls, and any close-up brand markings are not shown.",
        "photo 1: bottom, back, strap attachments, and hardware details are not separately documented.",
        "photo 1-2: interior views not shown, creed patch cannot be checked",
        "photo 1-2: back, side, bottom views not shown",
        "photo 1-2: close-up of round front logo badge text illegible - need macro to rule out branding",
        "photo 1-2: hardware engravings and zipper-pull brand not shown"
    ],
    "authenticity_concerns": [
        "photo 1: synthetic\/nylon construction and non-identified circular emblem provide no visible Coach identifier; the item appears to be a generic modern bag rather than a Coach product."
    ],
    "possible_model_reasoning": [
        "photo 1: silhouette is a generic modern soft messenger\/crossbody with zippered top and gathered side pockets, not a recognizable vintage Coach catalog model.",
        "Condition cannot be reliably graded from the studio-style photo; interior, underside, corners, and functional hardware are not documented.",
        "No Coach model fits: nylon messenger with webbing strap and silver hardware matches modern generic lightweight purse, not any 1970s-1990s glove-tanned classic or 2000s Signature canvas line",
        "Era reasoning: synthetic waterproof nylon + plated hardware + webbing strap = modern (2000s+) non-Coach fast-fashion",
        "Condition: appears new\/unused in catalog-style white-background photos, but condition grade not applicable as not Coach; no wear visible on exterior 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": "photo 1: silver-tone circular front emblem, rectangular strap adjuster, and small silver-tone attachment hardware; no Coach engraving is legible.",
        "leather_description": "photo 1: smooth fabric or nylon-like synthetic material; leather is not visible.",
        "lining_description": "not_visible",
        "strap_construction": "photo 1: wide adjustable woven webbing crossbody strap with silver-tone rectangular adjuster.",
        "stitching_description": "photo 1: visible machine stitching appears generally even along the fabric panels; detailed stress-point stitching is not shown."
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.0032,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.98,
                "coach_probability": 0.02,
                "vintage_probability": 0.01,
                "authenticity_confidence": 0.02,
                "image_quality_score": 0.88,
                "seller_misidentification_probability": 0.12,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [],
                "negative_evidence": [
                    "photo 1: bag is a lightweight navy synthetic\/nylon-looking messenger crossbody, matching the seller's 'waterproof' and 'lightweight' description rather than vintage Coach glove-tanned leather.",
                    "photo 1: visible silver-tone circular front emblem does not legibly show COACH or a Coach horse-and-carriage.",
                    "photo 1: broad webbing strap, silver-tone rectangular adjuster, gathered side pockets, and modern soft construction are inconsistent with the classic vintage Coach leather handbag population."
                ],
                "missing_information": [
                    "photo 1: interior, lining, creed area, fabric tags, zipper pulls, and any close-up brand markings are not shown.",
                    "photo 1: bottom, back, strap attachments, and hardware details are not separately documented."
                ],
                "authenticity_concerns": [
                    "photo 1: synthetic\/nylon construction and non-identified circular emblem provide no visible Coach identifier; the item appears to be a generic modern bag rather than a Coach product."
                ],
                "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: silver-tone circular front emblem, rectangular strap adjuster, and small silver-tone attachment hardware; no Coach engraving is legible.",
                    "leather_description": "photo 1: smooth fabric or nylon-like synthetic material; leather is not visible.",
                    "lining_description": "not_visible",
                    "strap_construction": "photo 1: wide adjustable woven webbing crossbody strap with silver-tone rectangular adjuster.",
                    "stitching_description": "photo 1: visible machine stitching appears generally even along the fabric panels; detailed stress-point stitching is not shown."
                },
                "possible_model_reasoning": [
                    "photo 1: silhouette is a generic modern soft messenger\/crossbody with zippered top and gathered side pockets, not a recognizable vintage Coach catalog model.",
                    "Condition cannot be reliably graded from the studio-style photo; interior, underside, corners, and functional hardware are not documented."
                ],
                "confidence": 0.87,
                "recommended_max_bid": 5,
                "estimated_resale_low": 5,
                "estimated_resale_high": 25
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [],
                "authenticity_confidence": 0.02,
                "coach_probability": 0.02,
                "confidence": 0.9,
                "estimated_era": "modern (2000s+), non-Coach",
                "estimated_resale_high": 20,
                "estimated_resale_low": 5,
                "image_quality_score": 0.6,
                "is_handbag_probability": 0.99,
                "missing_information": [
                    "photo 1-2: interior views not shown, creed patch cannot be checked",
                    "photo 1-2: back, side, bottom views not shown",
                    "photo 1-2: close-up of round front logo badge text illegible - need macro to rule out branding",
                    "photo 1-2: hardware engravings and zipper-pull brand not shown"
                ],
                "negative_evidence": [
                    "photo 1-2: navy waterproof nylon \/ synthetic body, not glove-tanned leather",
                    "photo 1-2: wide woven webbing crossbody strap with silver-tone slider, not leather Coach strap with brass hardware",
                    "photo 2: silver-tone plated hardware throughout, not solid brass vintage hardware",
                    "photo 1-2: modern lightweight messenger \/ hobo silhouette with elastic side pockets, no Coach catalog silhouette match",
                    "photo 1-2: no creed patch, no COACH wordmark, no horse-and-carriage, no leather hangtag visible"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "silver-tone metal rectangular slider on strap, D-rings, zipper pulls and small round front stud\/badge; plated appearance, not solid brass turnlock or brass dogleash clips",
                    "leather_description": "no leather visible; navy blue smooth synthetic waterproof nylon fabric body",
                    "lining_description": "not_visible",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "straight top-edge stitching visible along zip opening in photo 2; otherwise not close enough to assess",
                    "strap_construction": "wide navy textile webbing crossbody strap, adjustable with metal slider, attached via metal D-rings",
                    "turnlock_present": false
                },
                "positive_evidence": [],
                "possible_model_reasoning": [
                    "No Coach model fits: nylon messenger with webbing strap and silver hardware matches modern generic lightweight purse, not any 1970s-1990s glove-tanned classic or 2000s Signature canvas line",
                    "Era reasoning: synthetic waterproof nylon + plated hardware + webbing strap = modern (2000s+) non-Coach fast-fashion",
                    "Condition: appears new\/unused in catalog-style white-background photos, but condition grade not applicable as not Coach; no wear visible on exterior shown"
                ],
                "possible_models": [],
                "recommended_max_bid": 8,
                "seller_misidentification_probability": 0.02,
                "vintage_probability": 0.02
            }
        }
    ],
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 17574,
            "output_tokens": 538,
            "total_tokens": 18112,
            "estimated_cost_usd": 0.008321
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 17923,
            "output_tokens": 1095,
            "total_tokens": 19018,
            "estimated_cost_usd": 0.004461
        }
    ]
}