AI identification & appraisal estimate

Paleo-Indian Chert Biface Lithic Tool

Submitted photo of Paleo-Indian Chert Biface Lithic Tool
Photo submitted by the user — not generated by AI

User's notes

Paleo Indian chert bi face hand axe drill perforator tool found in Guthrie OK

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

$450 - $700

AI estimate as of February 19, 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.

Read the full disclaimer

AI Item Analysis

This is a hand-sized lithic tool discovered in Guthrie, Oklahoma, exhibiting characteristics consistent with Paleo-Indian bifacial technology. The item is crafted from a light-colored chert or flint, showing a creamy beige to grayish-white color palette with a matte, slightly waxy luster indicative of high silica content. The construction features pronounced bifacial reduction, where material has been flaked from both sides to create a functional edge. The piece displays several prominent percussion bulbs and negative flake scars, suggesting primary and secondary reduction stages. Notably, the specimen features a tapered, protruding section that may have served as a perforator or drill bit, while the broader body could have functioned as a scrapers or hand axe. Regarding condition, there is significant surface patination consistent with long-term environmental exposure. The edges show signs of use-wear and step-fracturing, likely from prehistoric utilization rather than modern damage. There are no modern maker's marks, as this is a prehistoric artifact. The scale and ergonomic shape suggest it was designed to be held directly in the hand (unhafted) or was perhaps a preform intended for further refinement. The craftsmanship reflects typical knapping techniques of early nomadic Indigenous cultures in the Great Plains region.

AI Appraisal Report

Upon visual analysis of this lithic specimen from Guthrie, Oklahoma, I find it to be a high-quality example of a Paleo-Indian multi-tool. The bifacial reduction exhibits classic percussion techniques, and the presence of a specialized protrusion—functioning as a drill or perforator—adds significant utility value over a standard preform. The creamy beige chert shows authentic surface patination and 'desert varnish' consistent with the archaeological record of the Great Plains. Use-wear along the lateral margins suggests this was a curated tool rather than debitage. The market for Paleo-Indian artifacts remains robust, especially for items with specific find-spot data like Guthrie. Comparable multi-tools from the late terminal Pleistocene typically fetch mid-to-high three-figure sums. However, valuation is heavily dependent on the integrity of its history. From these images alone, I cannot definitively rule out modern flint-knapping or 'sweetening' of the edges. A full authentication would require a microscopic 'use-wear' analysis to differentiate prehistoric micro-fractures from modern mechanical damage. Furthermore, documented provenance—such as a dated discovery log or inclusion in a known private collection—is essential to reach the higher end of the valuation. Without an in-hand tactile inspection to feel the 'waxy' texture and assess the depth of the patina in the flake scars, this evaluation remains a professional estimate based on visual morphology. Should this piece be verified as a genuine unhafted hand-axe with an integrated drill, its rarity as a multi-functional implement makes it a desirable piece for regional lithic enthusiasts.

Keep exploring

More prehistoric native american artifacts appraisals

Get your items appraised

Instant AI-powered appraisal estimates from a photo

Browse More Appraisals