Vintage Coach Hunter

{
    "is_handbag_probability": 0.03,
    "coach_probability": 0.02,
    "vintage_probability": 0.02,
    "authenticity_confidence": 0.02,
    "image_quality_score": 0.855,
    "seller_misidentification_probability": 0.04,
    "confidence": 0.895,
    "recommended_max_bid": 3,
    "estimated_resale_low": 3,
    "estimated_resale_high": 12,
    "possible_models": [],
    "positive_evidence": [],
    "negative_evidence": [
        "photo 1: The item shown is a loose replacement shoulder\/crossbody strap, not a complete handbag.",
        "photo 1: No Coach wordmark, horse-and-carriage mark, creed patch, serial\/style number, or hangtag is visible.",
        "photo 1: Gold-tone swivel clips and a dark strap are visible, but these are generic construction features and do not identify Coach.",
        "photo 1: The listing title explicitly describes a replacement strap, and the seller identifies it as unbranded.",
        "photo 1: object is a coiled standalone replacement shoulder strap, not a handbag",
        "photo 1: bright gold-tone plated lobster-clasp ends, not vintage Coach solid brass dogleash hardware",
        "photo 1: no creed patch, no COACH wordmark, no hangtag, no turnlock visible",
        "photo 1: thin edge-stitched strap with buckle adjustment and rivet, typical aftermarket accessory construction"
    ],
    "missing_information": [
        "photo 1: No handbag body is included or shown.",
        "A close-up of both sides of the strap, hardware stamps, and material edge would be needed to assess whether it is genuine leather or synthetic material.",
        "No dimensions, provenance, or original bag\/model information is provided.",
        "No handbag is shown - only a standalone replacement strap (photo 1)",
        "No creed, wordmark, or Coach identifier visible to assess",
        "No bag construction, lining, or hardware to evaluate for Coach manufacture"
    ],
    "authenticity_concerns": [
        "photo 1: This appears to be a generic replacement accessory rather than a Coach-made handbag component; no Coach identifiers are visible.",
        "photo 1: The shiny gold-tone hardware and generic lobster\/swivel clips provide no era-consistent Coach evidence."
    ],
    "possible_model_reasoning": [
        "photo 1: No Coach handbag silhouette or model-specific features are present; possible Coach models: none.",
        "photo 1: The item is likely a modern generic replacement strap based on the listing title, presentation, and lack of Coach identifiers.",
        "Condition cannot be reliably graded as a handbag because only a loose strap is shown; the strap appears unused or lightly handled in the product photo, but this cannot be verified.",
        "No Coach model fits - object is not a handbag but an aftermarket replacement strap",
        "No creed, serial, wordmark, turnlock, or Coach hardware geometry to decode era or style",
        "Condition: new-appearing accessory; not gradable on handbag scale"
    ],
    "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: Dark strap with multiple gold-tone swivel\/lobster-style clips and ring attachments; no visible branding or stamps.",
        "leather_description": "photo 1: Smooth dark brown strap surface is visible, but material cannot be confirmed as leather from the photo.",
        "lining_description": "not_visible",
        "strap_construction": "photo 1: Long narrow replacement-style strap, coiled, with folded and riveted\/fastened end tabs and detachable clips.",
        "stitching_description": "photo 1: Parallel edge stitching is visible along portions of the strap; fine construction details are limited by the product-style photo."
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.03,
                "coach_probability": 0.02,
                "vintage_probability": 0.02,
                "authenticity_confidence": 0.02,
                "image_quality_score": 0.86,
                "seller_misidentification_probability": 0.05,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [],
                "negative_evidence": [
                    "photo 1: The item shown is a loose replacement shoulder\/crossbody strap, not a complete handbag.",
                    "photo 1: No Coach wordmark, horse-and-carriage mark, creed patch, serial\/style number, or hangtag is visible.",
                    "photo 1: Gold-tone swivel clips and a dark strap are visible, but these are generic construction features and do not identify Coach.",
                    "photo 1: The listing title explicitly describes a replacement strap, and the seller identifies it as unbranded."
                ],
                "missing_information": [
                    "photo 1: No handbag body is included or shown.",
                    "A close-up of both sides of the strap, hardware stamps, and material edge would be needed to assess whether it is genuine leather or synthetic material.",
                    "No dimensions, provenance, or original bag\/model information is provided."
                ],
                "authenticity_concerns": [
                    "photo 1: This appears to be a generic replacement accessory rather than a Coach-made handbag component; no Coach identifiers are visible.",
                    "photo 1: The shiny gold-tone hardware and generic lobster\/swivel clips provide no era-consistent Coach evidence."
                ],
                "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: Dark strap with multiple gold-tone swivel\/lobster-style clips and ring attachments; no visible branding or stamps.",
                    "leather_description": "photo 1: Smooth dark brown strap surface is visible, but material cannot be confirmed as leather from the photo.",
                    "lining_description": "not_visible",
                    "strap_construction": "photo 1: Long narrow replacement-style strap, coiled, with folded and riveted\/fastened end tabs and detachable clips.",
                    "stitching_description": "photo 1: Parallel edge stitching is visible along portions of the strap; fine construction details are limited by the product-style photo."
                },
                "possible_model_reasoning": [
                    "photo 1: No Coach handbag silhouette or model-specific features are present; possible Coach models: none.",
                    "photo 1: The item is likely a modern generic replacement strap based on the listing title, presentation, and lack of Coach identifiers.",
                    "Condition cannot be reliably graded as a handbag because only a loose strap is shown; the strap appears unused or lightly handled in the product photo, but this cannot be verified."
                ],
                "confidence": 0.89,
                "recommended_max_bid": null,
                "estimated_resale_low": null,
                "estimated_resale_high": null
            }
        },
        {
            "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": 12,
                "estimated_resale_low": 3,
                "image_quality_score": 0.85,
                "is_handbag_probability": 0.03,
                "missing_information": [
                    "No handbag is shown - only a standalone replacement strap (photo 1)",
                    "No creed, wordmark, or Coach identifier visible to assess",
                    "No bag construction, lining, or hardware to evaluate for Coach manufacture"
                ],
                "negative_evidence": [
                    "photo 1: object is a coiled standalone replacement shoulder strap, not a handbag",
                    "photo 1: bright gold-tone plated lobster-clasp ends, not vintage Coach solid brass dogleash hardware",
                    "photo 1: no creed patch, no COACH wordmark, no hangtag, no turnlock visible",
                    "photo 1: thin edge-stitched strap with buckle adjustment and rivet, typical aftermarket accessory construction"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "gold-tone plated lobster clasps at both ends, buckle slider and rivet; bright plated finish, not vintage solid brass",
                    "leather_description": "dark brown smooth strap, appears to be leather or faux leather replacement strap material",
                    "lining_description": "not_visible",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "straight edge stitching along strap edges visible in photo 1",
                    "strap_construction": "long thin adjustable replacement crossbody\/shoulder strap with lobster clips, coiled in photo 1",
                    "turnlock_present": false
                },
                "positive_evidence": [],
                "possible_model_reasoning": [
                    "No Coach model fits - object is not a handbag but an aftermarket replacement strap",
                    "No creed, serial, wordmark, turnlock, or Coach hardware geometry to decode era or style",
                    "Condition: new-appearing accessory; not gradable on handbag scale"
                ],
                "possible_models": [],
                "recommended_max_bid": 3,
                "seller_misidentification_probability": 0.03,
                "vintage_probability": 0.02
            }
        }
    ],
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            "model_name": "meta:muse-spark-1.3-contributor",
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}