Vintage Coach Hunter

{
    "is_handbag_probability": 0.76,
    "coach_probability": 0.03,
    "vintage_probability": 0.805,
    "authenticity_confidence": 0.035,
    "image_quality_score": 0.775,
    "seller_misidentification_probability": 0.055,
    "confidence": 0.8,
    "recommended_max_bid": 15,
    "estimated_resale_low": 17.5,
    "estimated_resale_high": 47.5,
    "possible_models": [],
    "positive_evidence": [
        "photo 1: leather briefcase\/document-bag silhouette with a front zip compartment and top handles",
        "photo 2: substantial pebbled leather construction and evenly spaced perimeter stitching",
        "photo 4: zipper pull appears to show a YKK-style marking, consistent with a functional commercial leather bag",
        "photo 1, photo 2, photo 3: all-leather hand-carried bag with aged patina - population where vintage is possible, but no Coach-specific identifier",
        "photo 6: unlined suede-back interior consistent with vintage leather construction generally, not specific to Coach"
    ],
    "negative_evidence": [
        "photo 1: no visible Coach wordmark, carriage, hangtag, or recognizable Coach hardware",
        "photo 2: rectangular briefcase construction does not clearly match the listed vintage Coach handbag silhouettes",
        "photo 5: visible interior stamp is not a readable Coach creed and does not show a clearly identifiable Coach logo",
        "photo 6: interior and divider construction are visible, but no Coach identification is present",
        "photo 5: interior ink stamp reads STGO CHILE in horseshoe\/cartouche - Chile never a Coach manufacturing country per \u00a72.4",
        "photo 1, photo 2, photo 3, photo 6: portfolio\/briefcase silhouette with short fixed cut-out handles and exterior zip pocket - no matching vintage Coach briefcase\/portfolio catalog style in \u00a74",
        "photo 1-6: no creed patch, no COACH wordmark, no horse-and-carriage, no hangtag visible anywhere",
        "photo 4: zipper slider stamped [?] with corroded finish, not Talon\/Eclair\/YKK solid-brass vintage Coach zipper type",
        "photo 1-3: contrast light perimeter stitching and pebbled burnished leather finish unlike 1960s-70s Coach glove-tanned smooth leather and tone-matched stitching"
    ],
    "missing_information": [
        "photo 5: close, straight-on crop of the interior stamp is needed to identify its maker",
        "photo 4: clearer zipper-pull close-up is needed to confirm the marking",
        "photo 6: full interior, lining, seams, and any hidden labels or fabric tags should be shown",
        "photo 3: bottom corners and base construction are not fully documented",
        "seller-stated dimensions and country of manufacture are not independently verifiable from the photos",
        "No Coach creed patch visible in any photo - photo 6 interior shows only small Chile stamp, no rectangular creed patch",
        "No COACH wordmark, hangtag, or horse-and-carriage visible - request close-up of any interior stamps if claimed",
        "Zipper brand stamp not fully legible in photo 4 - request straight-on macro of slider back",
        "Bottom\/corners and interior divider close-ups for condition confirmation"
    ],
    "authenticity_concerns": [
        "photo 5: the visible interior stamp is not legible as a Coach creed and appears to be a different maker's mark or a generic logo",
        "photos 1-6: no Coach identifier is visible, so the bag should not be treated as a misidentified Coach based on silhouette or leather alone"
    ],
    "possible_model_reasoning": [
        "The object is most consistent with a vintage leather briefcase or document portfolio rather than a Coach handbag model. Its top handles, wide document-bag proportions, front zipper, and interior divider do not provide a specific Coach model match.",
        "photo 5: the stamped interior mark is too unclear to transcribe and does not visibly contain a Coach creed paragraph or serial format.",
        "Condition: Good; visible creasing, surface wear, edge wear, and zipper-area thread wear are present in photos 1-5; interior is used but appears substantially intact in photo 6.",
        "No Coach model fits: briefcase\/document portfolio shape with exterior full-width zip and fixed handles has no \u00a74 catalog match; Chile stamp definitively inconsistent with Coach country table",
        "Serial decode: none - no No. line visible",
        "Era reasoning: construction and Chile stamp suggest 1960s-1970s non-US leather goods, hence unknown era label for Coach system",
        "Condition: Good; dry patinated leather with handle darkening (photo 2, photo 3), tarnished\/corroded zip slider (photo 4), edge wear and scuffing but no holes or tears visible; interior divider intact (photo 6)"
    ],
    "estimated_era": "unknown",
    "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 and photo 4: metal zipper hardware is visible; the zipper pull appears to carry a marking, but the exact text is not fully legible. No turnlock or Coach-marked hardware is visible.",
        "leather_description": "photos 1-3: reddish cognac\/burnished brown pebbled leather with visible creasing, surface variation, edge wear, and a generally vintage appearance.",
        "lining_description": "photo 6: brown leather or leather-like interior with a central divider and compartments; exact material and condition are not fully determinable.",
        "strap_construction": "photos 1-3: two fixed, padded top handles; no detachable shoulder strap is visible.",
        "stitching_description": "photos 1-3 and 5: contrasting perimeter stitching is visible and generally even, with some looseness or wear near the zipper area in photo 4."
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.0014,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.82,
                "coach_probability": 0.04,
                "vintage_probability": 0.76,
                "authenticity_confidence": 0.05,
                "image_quality_score": 0.83,
                "seller_misidentification_probability": 0.08,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [
                    "photo 1: leather briefcase\/document-bag silhouette with a front zip compartment and top handles",
                    "photo 2: substantial pebbled leather construction and evenly spaced perimeter stitching",
                    "photo 4: zipper pull appears to show a YKK-style marking, consistent with a functional commercial leather bag"
                ],
                "negative_evidence": [
                    "photo 1: no visible Coach wordmark, carriage, hangtag, or recognizable Coach hardware",
                    "photo 2: rectangular briefcase construction does not clearly match the listed vintage Coach handbag silhouettes",
                    "photo 5: visible interior stamp is not a readable Coach creed and does not show a clearly identifiable Coach logo",
                    "photo 6: interior and divider construction are visible, but no Coach identification is present"
                ],
                "missing_information": [
                    "photo 5: close, straight-on crop of the interior stamp is needed to identify its maker",
                    "photo 4: clearer zipper-pull close-up is needed to confirm the marking",
                    "photo 6: full interior, lining, seams, and any hidden labels or fabric tags should be shown",
                    "photo 3: bottom corners and base construction are not fully documented",
                    "seller-stated dimensions and country of manufacture are not independently verifiable from the photos"
                ],
                "authenticity_concerns": [
                    "photo 5: the visible interior stamp is not legible as a Coach creed and appears to be a different maker's mark or a generic logo",
                    "photos 1-6: no Coach identifier is visible, so the bag should not be treated as a misidentified Coach based on silhouette or leather alone"
                ],
                "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 and photo 4: metal zipper hardware is visible; the zipper pull appears to carry a marking, but the exact text is not fully legible. No turnlock or Coach-marked hardware is visible.",
                    "leather_description": "photos 1-3: reddish cognac\/burnished brown pebbled leather with visible creasing, surface variation, edge wear, and a generally vintage appearance.",
                    "lining_description": "photo 6: brown leather or leather-like interior with a central divider and compartments; exact material and condition are not fully determinable.",
                    "strap_construction": "photos 1-3: two fixed, padded top handles; no detachable shoulder strap is visible.",
                    "stitching_description": "photos 1-3 and 5: contrasting perimeter stitching is visible and generally even, with some looseness or wear near the zipper area in photo 4."
                },
                "possible_model_reasoning": [
                    "The object is most consistent with a vintage leather briefcase or document portfolio rather than a Coach handbag model. Its top handles, wide document-bag proportions, front zipper, and interior divider do not provide a specific Coach model match.",
                    "photo 5: the stamped interior mark is too unclear to transcribe and does not visibly contain a Coach creed paragraph or serial format.",
                    "Condition: Good; visible creasing, surface wear, edge wear, and zipper-area thread wear are present in photos 1-5; interior is used but appears substantially intact in photo 6."
                ],
                "confidence": 0.78,
                "recommended_max_bid": 15,
                "estimated_resale_low": 20,
                "estimated_resale_high": 60
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [],
                "authenticity_confidence": 0.02,
                "coach_probability": 0.02,
                "confidence": 0.82,
                "estimated_era": "unknown",
                "estimated_resale_high": 35,
                "estimated_resale_low": 15,
                "image_quality_score": 0.72,
                "is_handbag_probability": 0.7,
                "missing_information": [
                    "No Coach creed patch visible in any photo - photo 6 interior shows only small Chile stamp, no rectangular creed patch",
                    "No COACH wordmark, hangtag, or horse-and-carriage visible - request close-up of any interior stamps if claimed",
                    "Zipper brand stamp not fully legible in photo 4 - request straight-on macro of slider back",
                    "Bottom\/corners and interior divider close-ups for condition confirmation"
                ],
                "negative_evidence": [
                    "photo 5: interior ink stamp reads STGO CHILE in horseshoe\/cartouche - Chile never a Coach manufacturing country per \u00a72.4",
                    "photo 1, photo 2, photo 3, photo 6: portfolio\/briefcase silhouette with short fixed cut-out handles and exterior zip pocket - no matching vintage Coach briefcase\/portfolio catalog style in \u00a74",
                    "photo 1-6: no creed patch, no COACH wordmark, no horse-and-carriage, no hangtag visible anywhere",
                    "photo 4: zipper slider stamped [?] with corroded finish, not Talon\/Eclair\/YKK solid-brass vintage Coach zipper type",
                    "photo 1-3: contrast light perimeter stitching and pebbled burnished leather finish unlike 1960s-70s Coach glove-tanned smooth leather and tone-matched stitching"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "brass-tone exterior zip pocket with leather pull tab; slider corroded\/tarnished in photo 4, stamp appears reversed\/non-Coach; no turnlock, no buckles, no D-rings",
                    "leather_description": "reddish-cognac\/burnished brown pebbled grain leather, aged patina with dryness and darkening at handles and edges, unlined suede-back interior visible in photo 6",
                    "lining_description": "unlined - raw suede-side leather interior with center divider, photo 6; no fabric lining",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "light contrast perimeter stitching around body and handles, visible in photo 2, photo 3, photo 6; even but not tone-matched as on vintage Coach classics",
                    "strap_construction": "no shoulder strap; two short fixed top handles stitched directly to body, photo 2, photo 3",
                    "turnlock_present": false
                },
                "positive_evidence": [
                    "photo 1, photo 2, photo 3: all-leather hand-carried bag with aged patina - population where vintage is possible, but no Coach-specific identifier",
                    "photo 6: unlined suede-back interior consistent with vintage leather construction generally, not specific to Coach"
                ],
                "possible_model_reasoning": [
                    "No Coach model fits: briefcase\/document portfolio shape with exterior full-width zip and fixed handles has no \u00a74 catalog match; Chile stamp definitively inconsistent with Coach country table",
                    "Serial decode: none - no No. line visible",
                    "Era reasoning: construction and Chile stamp suggest 1960s-1970s non-US leather goods, hence unknown era label for Coach system",
                    "Condition: Good; dry patinated leather with handle darkening (photo 2, photo 3), tarnished\/corroded zip slider (photo 4), edge wear and scuffing but no holes or tears visible; interior divider intact (photo 6)"
                ],
                "possible_models": [],
                "recommended_max_bid": 15,
                "seller_misidentification_probability": 0.03,
                "vintage_probability": 0.85
            }
        }
    ],
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 18124,
            "output_tokens": 981,
            "total_tokens": 19105,
            "estimated_cost_usd": 0.009604
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 18678,
            "output_tokens": 1502,
            "total_tokens": 20180,
            "estimated_cost_usd": 0.004937
        }
    ]
}