Vintage Coach Hunter

{
    "is_handbag_probability": 0.99,
    "coach_probability": 0.02,
    "vintage_probability": 0.015,
    "authenticity_confidence": 0.02,
    "image_quality_score": 0.655,
    "seller_misidentification_probability": 0.025,
    "confidence": 0.76,
    "recommended_max_bid": 11,
    "estimated_resale_low": 5,
    "estimated_resale_high": 27.5,
    "possible_models": [],
    "positive_evidence": [],
    "negative_evidence": [
        "photo 1: Handbag is visibly a modern structured crossbody with color-blocked smooth panels and decorative strap hardware, not a recognizable vintage Coach construction.",
        "photo 1: No legible COACH wordmark, horse-and-carriage, leather hangtag, creed patch, or Coach-style identifier is visible.",
        "photo 1: Bright gold-tone plated-looking hardware and thin finished edges are inconsistent with typical vintage solid-brass, glove-tanned Coach classics.",
        "photo 1: Seller identifies the item as unbranded; the background appears to show unrelated ACK branding, not a Coach identifier.",
        "photo 1: no COACH wordmark, horse-and-carriage, creed patch, or hangtag visible",
        "photo 1: closure is dual decorative buckle straps, not Coach turnlock geometry",
        "photo 1: modern fast-fashion two-tone envelope silhouette with top handle + thin crossbody strap does not match vintage Coach catalog styles",
        "photo 1: smooth high-sheen coated-looking leather with contrast edge paint, not vintage glove-tanned cowhide with suede back",
        "photo 1: bright gold-tone plated buckle hardware, not solid brass vintage hardware"
    ],
    "missing_information": [
        "photo 1: Interior, creed area, lining, zipper pulls, bottom, strap attachments, and any labels are not shown.",
        "A straight-on close-up of any interior leather patch, fabric tag, or hardware stamp would be needed to investigate further.",
        "Seller-stated dimensions and material composition are not provided.",
        "photo 1 only: no interior, creed, bottom, back, or hardware close-up views shown",
        "creed not shown - no stamped leather patch visible to transcribe",
        "lining, zipper brand, and hardware engravings not visible"
    ],
    "authenticity_concerns": [
        "photo 1: The modern color-blocked design and plated-looking hardware are generic lookalike cues rather than evidence of Coach manufacture.",
        "photo 1: No Coach identifier is visible, so a Coach attribution cannot be supported from the available photo."
    ],
    "possible_model_reasoning": [
        "photo 1 silhouette, dual-buckle flap, two-tone coated material and plated hardware are inconsistent with any 1970s-1990s Coach classic (City Bag, Court, Station, Willis, Dinky) and with modern Coach lines; no Coach identifier to decode",
        "Condition: not graded for Coach; as generic fashion bag appears new-like in single lifestyle shot but interior, bottom, and strap wear 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": "photo 1: Gold-tone rectangular buckles, rings, and clasp hardware are visible; no Coach engraving is legible.",
        "leather_description": "photo 1: Smooth, structured, color-blocked cream and tan panels are visible; leather versus synthetic material cannot be determined.",
        "lining_description": "not_visible",
        "strap_construction": "photo 1: Detachable-looking long shoulder strap with adjustment buckles and a short top handle is visible; attachment construction is partly obscured.",
        "stitching_description": "photo 1: Dark contrasting edge stitching appears generally even around the panels; close construction quality is not assessable."
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.0097,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.99,
                "coach_probability": 0.02,
                "vintage_probability": 0.01,
                "authenticity_confidence": 0.02,
                "image_quality_score": 0.86,
                "seller_misidentification_probability": 0.03,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [],
                "negative_evidence": [
                    "photo 1: Handbag is visibly a modern structured crossbody with color-blocked smooth panels and decorative strap hardware, not a recognizable vintage Coach construction.",
                    "photo 1: No legible COACH wordmark, horse-and-carriage, leather hangtag, creed patch, or Coach-style identifier is visible.",
                    "photo 1: Bright gold-tone plated-looking hardware and thin finished edges are inconsistent with typical vintage solid-brass, glove-tanned Coach classics.",
                    "photo 1: Seller identifies the item as unbranded; the background appears to show unrelated ACK branding, not a Coach identifier."
                ],
                "missing_information": [
                    "photo 1: Interior, creed area, lining, zipper pulls, bottom, strap attachments, and any labels are not shown.",
                    "A straight-on close-up of any interior leather patch, fabric tag, or hardware stamp would be needed to investigate further.",
                    "Seller-stated dimensions and material composition are not provided."
                ],
                "authenticity_concerns": [
                    "photo 1: The modern color-blocked design and plated-looking hardware are generic lookalike cues rather than evidence of Coach manufacture.",
                    "photo 1: No Coach identifier is visible, so a Coach attribution cannot be supported from the available photo."
                ],
                "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: Gold-tone rectangular buckles, rings, and clasp hardware are visible; no Coach engraving is legible.",
                    "leather_description": "photo 1: Smooth, structured, color-blocked cream and tan panels are visible; leather versus synthetic material cannot be determined.",
                    "lining_description": "not_visible",
                    "strap_construction": "photo 1: Detachable-looking long shoulder strap with adjustment buckles and a short top handle is visible; attachment construction is partly obscured.",
                    "stitching_description": "photo 1: Dark contrasting edge stitching appears generally even around the panels; close construction quality is not assessable."
                },
                "possible_model_reasoning": [],
                "confidence": 0.92,
                "recommended_max_bid": 10,
                "estimated_resale_low": 5,
                "estimated_resale_high": 30
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [],
                "authenticity_confidence": 0.02,
                "coach_probability": 0.02,
                "confidence": 0.6,
                "estimated_era": "modern (2000s+), non-Coach",
                "estimated_resale_high": 25,
                "estimated_resale_low": 5,
                "image_quality_score": 0.45,
                "is_handbag_probability": 0.99,
                "missing_information": [
                    "photo 1 only: no interior, creed, bottom, back, or hardware close-up views shown",
                    "creed not shown - no stamped leather patch visible to transcribe",
                    "lining, zipper brand, and hardware engravings not visible"
                ],
                "negative_evidence": [
                    "photo 1: no COACH wordmark, horse-and-carriage, creed patch, or hangtag visible",
                    "photo 1: closure is dual decorative buckle straps, not Coach turnlock geometry",
                    "photo 1: modern fast-fashion two-tone envelope silhouette with top handle + thin crossbody strap does not match vintage Coach catalog styles",
                    "photo 1: smooth high-sheen coated-looking leather with contrast edge paint, not vintage glove-tanned cowhide with suede back",
                    "photo 1: bright gold-tone plated buckle hardware, not solid brass vintage hardware"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "gold-tone buckle hardware on two front vertical straps; bright plated appearance, no COACH engraving visible",
                    "leather_description": "smooth two-tone (cream and tan) leather-look material with glossy finish and contrast trim; appears coated\/synthetic, not glove-tanned full-grain",
                    "lining_description": "not_visible",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "edge stitching visible along flap and trim, tone-matched; no detail sufficient to assess vintage Coach stitching",
                    "strap_construction": "short top handle plus thin detachable-appearing crossbody shoulder strap with buckle adjustment",
                    "turnlock_present": false
                },
                "positive_evidence": [],
                "possible_model_reasoning": [
                    "photo 1 silhouette, dual-buckle flap, two-tone coated material and plated hardware are inconsistent with any 1970s-1990s Coach classic (City Bag, Court, Station, Willis, Dinky) and with modern Coach lines; no Coach identifier to decode",
                    "Condition: not graded for Coach; as generic fashion bag appears new-like in single lifestyle shot but interior, bottom, and strap wear not shown"
                ],
                "possible_models": [],
                "recommended_max_bid": 12,
                "seller_misidentification_probability": 0.02,
                "vintage_probability": 0.02
            }
        }
    ],
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 15362,
            "output_tokens": 544,
            "total_tokens": 15906,
            "estimated_cost_usd": 0.00745
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 15630,
            "output_tokens": 1056,
            "total_tokens": 16686,
            "estimated_cost_usd": 0.003971
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}