AI Appraisal Estimate

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Submitted photo · June 27, 2026

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AI appraisal

AI analysis & estimate

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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

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Antique Keen Kutter E.C. Simmons Cast Iron Padlock

Antique Tools and Hardware / Advertising Memorabilia

AI Estimated Value

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$150 - $250

As of June 27, 2026

AI Item Analysis

·AI can make mistakes·Verify before acting
This is an antique cast iron padlock featuring the iconic logo of Keen Kutter, a brand under the E.C. Simmons Hardware Company. The lock is designed in the shape of the Keen Kutter 'Wedge' or 'Keystone' logo, with the company name 'E.C. SIMMONS' embossed at the top and the stylized 'KEEN KUTTER' text filling the main body. It is constructed from heavy cast iron, exhibiting a dark, aged patina consistent with tools and hardware from the late 19th to early 20th century (circa 1900-1920). The item includes a corresponding metal key, currently attached to the shackle via a weathered twine string. The padlock displays honest wear, with minor surface oxidation and rubbing on the raised lettering, which is typical for a utilitarian item of this age. The casting is crisp, showcasing the high-quality industrial craftsmanship associated with St. Louis-based E.C. Simmons. The shackle appears robust and functional, though it shows surface pitting. This piece is a highly collectible example of American advertising hardware, representing one of the most famous tool brands in history. Its unique shape and prominent branding make it a desirable piece for both tool collectors and padlock enthusiasts.

AI Appraisal Report

·AI can make mistakes·Verify before acting
I have carefully examined the provided images of this E.C. Simmons Keen Kutter cast iron padlock. From a visual standpoint, the piece appears to be an authentic example of early 20th-century advertising hardware. The crispness of the 'E.C. Simmons' lettering and the specific 'Keen Kutter' logotype align accurately with period-correct manufacturing standards from the St. Louis-based hardware giant. The dark iron patina and minor surface pitting on the shackle suggest honest age rather than artificial distressing. The market for Keen Kutter memorabilia remains robust due to the crossover appeal between tool collectors and advertising enthusiasts. Comparables for embossed logo padlocks of this type generally trade in the mid-hundreds, particularly when paired with a functional key. The presence of the key significantly stabilizes the value, though the twine attachment suggests it has been kept as a set for some time. The 'Wedge' shape is more desirable than standard circular or square designs. However, there are limitations to this digital appraisal. To provide a definitive certification of authenticity, I would need to perform a physical inspection to check the internal mechanism's operation and ensure the 'feel' of the iron and weight matches period metallurgy. Modern reproductions of Keen Kutter items do exist; verifying the wear patterns under magnification and checking for sand-casting artifacts common in fakes would be essential. Furthermore, formal provenance documentation or a history of the item's discovery would solidify its standing. Despite these caveats, based on the visual evidence of the casting quality and oxidation, this is a premium piece of American industrial history.

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