Vintage Coach Hunter

{
    "is_handbag_probability": 0.975,
    "coach_probability": 0.05,
    "vintage_probability": 0.71,
    "authenticity_confidence": 0.045,
    "image_quality_score": 0.71,
    "seller_misidentification_probability": 0.055,
    "confidence": 0.765,
    "recommended_max_bid": 13.5,
    "estimated_resale_low": 12.5,
    "estimated_resale_high": 37.5,
    "possible_models": [],
    "positive_evidence": [
        "photo 3: structured leather handbag with a vintage-style frame construction and sewn handle attachments.",
        "photo 2: leather appears genuine rather than obviously faux or fabric.",
        "photo 1: compact satchel form is compatible with older handbag construction, although not specifically with a documented Coach model.",
        "photo 1-6: leather handbag in brown, the population where misidentified Coach could hide"
    ],
    "negative_evidence": [
        "photo 1: bright silver-tone frame hardware and large decorative side hardware do not resemble the solid brass turnlock construction typical of classic vintage Coach.",
        "photo 4: prominent geometric silver hardware is not a recognizable Coach hallmark and is more consistent with another vintage handbag maker.",
        "photos 1-6: no visible COACH wordmark, horse-and-carriage mark, leather hangtag, creed patch, or serial\/style number.",
        "photos 1-6: the silhouette and frame closure do not closely match the documented classic Coach model catalog.",
        "listing description: seller identifies the bag as unbranded; this is weak evidence, but no photographic Coach identifier contradicts it.",
        "photo 1,3,4,5: kisslock \/ frame closure with silver-tone frame, not Coach brass turnlock geometry",
        "photo 1-6: no COACH wordmark, horse-and-carriage, creed patch, or leather hangtag visible",
        "photo 3: short wrapped top handles on frame mounts, not Coach dowel top-handle, dogleash or buckle-adjust strap construction",
        "photo 2,3,5,6: shiny smooth brown leather with silver-tone hardware, inconsistent with 1970s-1990s unlined glove-tanned + solid brass Coach classics",
        "photo 5,6: structured kisslock satchel silhouette does not match any Coach catalog style in \u00a74"
    ],
    "missing_information": [
        "photo 1-6: interior, including any label, creed patch, fabric tag, or maker stamp, is not shown.",
        "photo 1-6: zipper\/frame hardware markings and underside of the closure are not shown.",
        "photo 1-6: full interior condition and the seller-mentioned interior cracking cannot be evaluated.",
        "photo 1-6: handle attachment details and all bottom corners are only partially documented.",
        "photo of emptied interior and lining to check for creed patch, fabric label or metal tag",
        "straight-on photo of interior back wall \/ pocket where Coach creed would sit",
        "close-up of frame hardware stamps and handle attachments",
        "confirmation of leather vs coated material and interior cracking noted by seller"
    ],
    "authenticity_concerns": [
        "photos 1 and 4: silver-tone decorative hardware and frame design are inconsistent with the usual construction cues of a classic vintage Coach bag.",
        "photos 1-6: absence of any visible Coach identifier leaves the Coach attribution unsupported; this is more likely a non-Coach vintage leather handbag than a counterfeit Coach."
    ],
    "possible_model_reasoning": [
        "No Coach model is proposed: the frame satchel shape and prominent silver geometric hardware do not provide a convincing match to the listed classic Coach styles.",
        "Estimated age is uncertain. The structured frame construction may be vintage, but the visible hardware and glossy finish do not establish a pre-1975 Coach or any other Coach era.",
        "Condition: Good to Fair; photos 2 and 6 show scratches, corner rubbing, and scuffing, while the seller reports interior cracking that is not visible in the provided photos.",
        "No Coach model fits: kisslock frame satchel with silver hardware and top handles has no match in Classic glove-tanned catalog (City 9790, Willis 9927, Court 9870, Station 5130, Dinky 9375 etc. all use turnlock flap)",
        "Era reasoning: seller claims 1940s-1950s; style is mid-century frame bag, predating Bonnie Cashin Coach handbags (1962-1974) and all creed eras; no pre-creed Cashin cues (no kisslock Cashin frame match, no striped lining shown, no Cashin label)",
        "Condition: Good; seller notes small line on back (photo 2) and some cracking inside (interior not shown), outside overall good with corner wear visible photo 2,6"
    ],
    "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": "photos 1, 4, 5, 6: structured metal frame closure and large bright silver-tone geometric side hardware; no Coach engraving is visible.",
        "leather_description": "photos 1-6: brown smooth leather or leather-like material with a glossy finish, visible scuffs, scratches, color variation, and wear at corners.",
        "lining_description": "not_visible",
        "strap_construction": "photos 1, 3, 4: single top handle with folded and stitched leather attachment sections and small metal rings; no detachable crossbody strap is visible.",
        "stitching_description": "photos 1-6: stitching is mostly concealed; visible handle attachment stitching appears orderly, but detailed seam inspection is limited."
    },
    "ensemble_agreement": "HIGH",
    "ensemble_variance": 0.002,
    "ensemble_members": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "result": {
                "is_handbag_probability": 0.98,
                "coach_probability": 0.08,
                "vintage_probability": 0.72,
                "authenticity_confidence": 0.06,
                "image_quality_score": 0.82,
                "seller_misidentification_probability": 0.08,
                "estimated_era": "modern (2000s+), non-Coach",
                "possible_models": [],
                "positive_evidence": [
                    "photo 3: structured leather handbag with a vintage-style frame construction and sewn handle attachments.",
                    "photo 2: leather appears genuine rather than obviously faux or fabric.",
                    "photo 1: compact satchel form is compatible with older handbag construction, although not specifically with a documented Coach model."
                ],
                "negative_evidence": [
                    "photo 1: bright silver-tone frame hardware and large decorative side hardware do not resemble the solid brass turnlock construction typical of classic vintage Coach.",
                    "photo 4: prominent geometric silver hardware is not a recognizable Coach hallmark and is more consistent with another vintage handbag maker.",
                    "photos 1-6: no visible COACH wordmark, horse-and-carriage mark, leather hangtag, creed patch, or serial\/style number.",
                    "photos 1-6: the silhouette and frame closure do not closely match the documented classic Coach model catalog.",
                    "listing description: seller identifies the bag as unbranded; this is weak evidence, but no photographic Coach identifier contradicts it."
                ],
                "missing_information": [
                    "photo 1-6: interior, including any label, creed patch, fabric tag, or maker stamp, is not shown.",
                    "photo 1-6: zipper\/frame hardware markings and underside of the closure are not shown.",
                    "photo 1-6: full interior condition and the seller-mentioned interior cracking cannot be evaluated.",
                    "photo 1-6: handle attachment details and all bottom corners are only partially documented."
                ],
                "authenticity_concerns": [
                    "photos 1 and 4: silver-tone decorative hardware and frame design are inconsistent with the usual construction cues of a classic vintage Coach bag.",
                    "photos 1-6: absence of any visible Coach identifier leaves the Coach attribution unsupported; this is more likely a non-Coach vintage leather handbag than a counterfeit Coach."
                ],
                "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": "photos 1, 4, 5, 6: structured metal frame closure and large bright silver-tone geometric side hardware; no Coach engraving is visible.",
                    "leather_description": "photos 1-6: brown smooth leather or leather-like material with a glossy finish, visible scuffs, scratches, color variation, and wear at corners.",
                    "lining_description": "not_visible",
                    "strap_construction": "photos 1, 3, 4: single top handle with folded and stitched leather attachment sections and small metal rings; no detachable crossbody strap is visible.",
                    "stitching_description": "photos 1-6: stitching is mostly concealed; visible handle attachment stitching appears orderly, but detailed seam inspection is limited."
                },
                "possible_model_reasoning": [
                    "No Coach model is proposed: the frame satchel shape and prominent silver geometric hardware do not provide a convincing match to the listed classic Coach styles.",
                    "Estimated age is uncertain. The structured frame construction may be vintage, but the visible hardware and glossy finish do not establish a pre-1975 Coach or any other Coach era.",
                    "Condition: Good to Fair; photos 2 and 6 show scratches, corner rubbing, and scuffing, while the seller reports interior cracking that is not visible in the provided photos."
                ],
                "confidence": 0.78,
                "recommended_max_bid": 15,
                "estimated_resale_low": 10,
                "estimated_resale_high": 40
            }
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "result": {
                "authenticity_concerns": [],
                "authenticity_confidence": 0.03,
                "coach_probability": 0.02,
                "confidence": 0.75,
                "estimated_era": "unknown",
                "estimated_resale_high": 35,
                "estimated_resale_low": 15,
                "image_quality_score": 0.6,
                "is_handbag_probability": 0.97,
                "missing_information": [
                    "photo of emptied interior and lining to check for creed patch, fabric label or metal tag",
                    "straight-on photo of interior back wall \/ pocket where Coach creed would sit",
                    "close-up of frame hardware stamps and handle attachments",
                    "confirmation of leather vs coated material and interior cracking noted by seller"
                ],
                "negative_evidence": [
                    "photo 1,3,4,5: kisslock \/ frame closure with silver-tone frame, not Coach brass turnlock geometry",
                    "photo 1-6: no COACH wordmark, horse-and-carriage, creed patch, or leather hangtag visible",
                    "photo 3: short wrapped top handles on frame mounts, not Coach dowel top-handle, dogleash or buckle-adjust strap construction",
                    "photo 2,3,5,6: shiny smooth brown leather with silver-tone hardware, inconsistent with 1970s-1990s unlined glove-tanned + solid brass Coach classics",
                    "photo 5,6: structured kisslock satchel silhouette does not match any Coach catalog style in \u00a74"
                ],
                "observed_features": {
                    "coach_wordmark_present": false,
                    "creed_present": false,
                    "creed_text": "not_visible",
                    "hangtag_present": false,
                    "hardware_description": "silver-tone \/ nickel-tone kisslock frame with rectangular clasp tab; frame and handle rings bright plated, not solid brass turnlock",
                    "leather_description": "smooth medium-brown leather with sheen, some surface wear and light scratch on back per photo 2",
                    "lining_description": "not_visible",
                    "serial_or_style_number": "not_visible",
                    "serial_or_style_number_present": false,
                    "stitching_description": "not_visible in detail; handle wrap stitching visible in photo 1 but no overall stitch read",
                    "strap_construction": "two short fixed top handles in matching brown, wrapped \/ looped construction attached to frame; no detachable crossbody strap",
                    "turnlock_present": false
                },
                "positive_evidence": [
                    "photo 1-6: leather handbag in brown, the population where misidentified Coach could hide"
                ],
                "possible_model_reasoning": [
                    "No Coach model fits: kisslock frame satchel with silver hardware and top handles has no match in Classic glove-tanned catalog (City 9790, Willis 9927, Court 9870, Station 5130, Dinky 9375 etc. all use turnlock flap)",
                    "Era reasoning: seller claims 1940s-1950s; style is mid-century frame bag, predating Bonnie Cashin Coach handbags (1962-1974) and all creed eras; no pre-creed Cashin cues (no kisslock Cashin frame match, no striped lining shown, no Cashin label)",
                    "Condition: Good; seller notes small line on back (photo 2) and some cracking inside (interior not shown), outside overall good with corner wear visible photo 2,6"
                ],
                "possible_models": [],
                "recommended_max_bid": 12,
                "seller_misidentification_probability": 0.03,
                "vintage_probability": 0.7
            }
        }
    ],
    "_usage": [
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            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 18116,
            "output_tokens": 896,
            "total_tokens": 19012,
            "estimated_cost_usd": 0.009397
        },
        {
            "model_name": "meta:muse-spark-1.3-contributor",
            "input_tokens": 18666,
            "output_tokens": 1440,
            "total_tokens": 20106,
            "estimated_cost_usd": 0.004885
        }
    ]
}