AI Appraisal Estimate

AI-generated estimates · not official valuations

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Submitted photo · July 7, 2026

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AI analysis below

AI appraisal

AI analysis & estimate

AI-Generated · Verify before acting

Everything below is generated by AI for informational purposes only. AI can make mistakes — the AI may misidentify items or misattribute them (artist, maker, brand, designer, origin, era). This is not an official valuation and should not be used for insurance, sale, tax, estate, legal, or lending purposes — or any decision requiring a certified appraisal. It is not an authoritative claim about any person, brand, or rights holder — do not share or rely on it as a factual statement about a third party. Always consult qualified professionals before making financial decisions.

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AI Identification

·Not independently authenticated·Verify before acting

Gibson-style GK-55 electric guitar with hard shell case

Musical Instruments

AI Estimated Value

·Not an official valuation·Verify before acting

$1,300 - $1,800

As of July 7, 2026

AI Item Analysis

·AI can make mistakes·Verify before acting
This electric guitar features a single-cutaway body design in a tobacco sunburst finish, stylistically consistent with late 1970s Gibson models. The headstock bears a gold-tone decal reading 'Gibson' and a truss rod cover inscribed with 'GK-55', suggesting it may be a model from that short-lived series (circa 1979), though this cannot be confirmed without a serial number lookup and physical inspection. The guitar is equipped with two humbucking pickups that bear 'Seymour Duncan' branding, which appear to be later replacements or modifications to the original electronics. It features a bolt-on neck construction, four gold 'speed' control knobs, and a chrome-plated 'TP-6' style fine-tuning tailpiece. The rosewood fingerboard is accented with dot inlays. Visible condition issues include moderate surface scratches on the body, dust accumulation around the hardware, and wear on the hardshell case, which also bears a 'Gibson' logo. The case handle is wrapped in red and black tape, indicating a likely repair. While the markings are consistent with a production instrument from the Kalamazoo era, they remain unverified as fraudulent decals and parts swapping are common in vintage instruments.

AI Appraisal Report

·AI can make mistakes·Verify before acting
Based on the provided imagery, the instrument appears to be a GK-55 model electric guitar, a short-lived series from 1979 characterized by a bolt-on neck and single-cutaway design. The headstock bears markings consistent with the Gibson brand, and the truss rod cover is inscribed with the model name. However, I cannot verify the legitimacy of these markings or the instrument's provenance through a photograph alone; a serial number search and internal inspection of the neck pocket and electronics would be necessary to confirm the build year and manufacturer. The presence of Seymour Duncan humbuckers suggests the electronics have been modified or replaced, which often impacts value relative to instruments with period-specific factory components. The chrome TP-6 tailpiece is a notable feature for this era, though its state suggests some surface wear. Based on what I can see, the guitar exhibits moderate cosmetic wear, including scratches and hardware oxidation, and the accompanying case shows significant handle repair. The appraisal range reflects a scenario where the instrument is a production model from the Kalamazoo era. In the current market, vintage instruments from this specific production window are sought after by niche collectors for their unique specifications, though value is highly sensitive to the integrity of the neck joint and playability. If physical inspection were to reveal this as a non-period replica, a modern copy, or a 'parts' guitar with a fraudulent decal, the value would likely decrease to a range of $300 - $500. Professional authentication of the wood, wiring, and stamps is recommended.

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