AI identification & appraisal estimate

Prehistoric Lithic Scraper / Knife Multi-tool

Submitted photo of Prehistoric Lithic Scraper / Knife Multi-tool
Photo submitted by the user — not generated by AI

User's notes

Prehistoric knife/ scraper multi tool found in Guthrie, OK. 3" x 2.5"

These notes were written by the person who submitted this item. Appraiser.AI has not verified them, and the AI's identification and estimate may rely on them.

AI Estimated Value

Not an official valuation

$45 - $85

AI estimate as of February 17, 2026 · verify with a professional before acting

AI-Generated · Verify before acting

Everything on this page 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.

This analysis also relies on unverified notes provided by the user, which may be incomplete or inaccurate and could affect the result.

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AI Item Analysis

Measurements are approx. 3 inches by 2.5 inches. This item is a prehistoric lithic tool, likely serving a dual purpose as a scraper and a hand-held knife. It is constructed from a cryptocrystalline silicate (chert or flint) common to the Oklahoma region. The material exhibits a tan-to-ochre weathered patina on the dorsal surface, with a lighter greyish interior exposed on the worked edges. The tool features a thick, unworked 'back' or cortical surface that allows for a steady grip, while the opposite longitudinal edge shows intentional unifacial retouching to create a sharp, durable working surface. The craftsmanship is utilitarian, utilizing percussion flaking to shape the core and secondary pressure flaking to refine the cutting edge. Notable features include a slightly concave section that would allow for hide scraping or wood shaving. There are no maker's marks, as this is an Indigenous stone tool. Condition-wise, the item shows significant ancient use-wear along the working margin, known as 'edge-nibbling' or micro-flaking, and displays a heavy desert varnish/patina consistent with an age ranging from the Archaic to the Woodland period (approx. 1,000 to 5,000+ years old). No modern fractures or impact damage from farm equipment are visible, suggesting it was found in a primary or protected context.

AI Appraisal Report

Based on my examination of the provided specifications and visual description of the lithic multi-tool found in Guthrie, Oklahoma, I have assessed this artifact as a utilitarian field tool from the Archaic to Woodland period. The tool exhibits diagnostic characteristics of authentic prehistoric manufacture, including a well-developed desert varnish and differential patination between the cortical surface and the worked edges. The presence of 'edge-nibbling' and micro-flaking suggests genuine ancient use-wear rather than modern 'flint knapping' or mechanical damage. The choice of local cryptocrystalline silicate is consistent with indigenous lithic procurement patterns in the Southern Plains. From a market perspective, utilitarian scrapers and expedient knives are common archeological finds. While this piece features a desirable 'hand-feel' and intentional unifacial retouching, it lacks the high-market demand associated with formal bifacial projectile points (such as Clovis or Folsom points) or highly stylized ceremonial objects. The value is driven primarily by its status as a tangible piece of regional history and its excellent state of preservation. It must be noted that this appraisal is based on photographic and descriptive evidence. A definitive authentication would require an in-person microscopic analysis to confirm the absence of modern steel tool marks and verify the chemical consistency of the patina. Furthermore, documented provenance—specifically proof that the item was found on private land with owner permission—is essential to comply with the Archaeological Resources Protection Act (ARPA) and significantly impacts the legal transferability and secondary market value of the artifact.

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