Vintage Coach Hunter

{
    "is_handbag_probability": 0.99,
    "coach_probability": 0.02,
    "vintage_probability": 0.72,
    "authenticity_confidence": 0.02,
    "image_quality_score": 0.88,
    "seller_misidentification_probability": 0.03,
    "estimated_era": "unknown",
    "possible_models": [],
    "positive_evidence": [
        "photo 1: clearly a leather bucket-style shoulder handbag with adjustable strap and drawstring closure",
        "photo 2: visible geometric branded lining and organized interior",
        "photo 3: interior leather tab visibly reads BONIA, identifying the bag as Bonia rather than Coach",
        "photo 6: close-up again shows BONIA branding on the interior tab"
    ],
    "negative_evidence": [
        "photo 3: the visible brand marking reads BONIA, not COACH",
        "photo 6: close-up branding is an oval\/rectangular BONIA plaque rather than a Coach creed patch",
        "photo 2: geometric monogram lining is not Coach signature C canvas or a Coach creed-related interior",
        "photo 1: drawstring bucket construction and visible Bonia branding do not provide a recognizable Coach model identifier"
    ],
    "missing_information": [
        "photo 1-6: no clear full view of the bottom, all corners, or strap condition",
        "photo 2-4: no readable manufacturing or date label is shown",
        "seller-stated 1980s\u20131990s age is not independently verifiable from the photos"
    ],
    "authenticity_concerns": [
        "photo 3 and photo 6: the bag is explicitly branded BONIA, so it should not be treated as a Coach bag or Coach-style unidentified find"
    ],
    "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 photos 4-5: gold-tone rings, snaps, strap fittings, and protective feet are visible; no Coach engraving is visible",
        "leather_description": "photos 1 and 4-6: brown\/cognac leather with glossy finish, prominent creasing and surface character; appears genuine leather but exact tannage is not determinable",
        "lining_description": "photos 2-4: dark geometric monogram fabric lining with an interior zippered compartment and slip compartments",
        "strap_construction": "photos 1 and 4-5: long adjustable leather shoulder strap attached through metal rings and leather tabs",
        "stitching_description": "photos 3-6: visible brown stitching appears generally even; some close-ups show wear and surface creasing around seams"
    },
    "possible_model_reasoning": [
        "photo 1: silhouette is a Bonia drawstring bucket shoulder bag, not a catalogued Coach model based on the visible BONIA branding",
        "photos 2-6: no Coach creed, Coach wordmark, horse-and-carriage mark, or Coach serial\/style number is visible",
        "Condition: approximately Very Good to Good; leather has noticeable creasing and surface wear, while the interior and hardware appear substantially intact; bottom and full strap condition are not fully documented"
    ],
    "confidence": 0.93,
    "recommended_max_bid": 20,
    "estimated_resale_low": 15,
    "estimated_resale_high": 50,
    "_usage": [
        {
            "model_name": "openai:gpt-5.6-luna",
            "input_tokens": 18292,
            "output_tokens": 891,
            "total_tokens": 19183,
            "estimated_cost_usd": 0.009455
        }
    ]
}