AI identification & appraisal estimate

Amadeo P. Giannini Commemorative Stamp

Philately / Stamps AI-generated identification & appraisal · may be incorrect · not an official valuation→

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AI Estimated Value

Not an official valuation

$15 - $30

AI estimate as of March 19, 2025 · 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.

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AI Item Analysis

A vintage U.S. postage stamp featuring a portrait of Amadeo P. Giannini, a notable American banker and founder of Bank of America. The stamp is marked with '21 cents' and has a cancellation mark, indicating it has been used.

AI Appraisal Report

The value of this stamp is primarily determined by its age, design, and the prominence of the figure depicted. Amadeo P. Giannini is an important figure in American banking history, which adds to the stamp's collectibility. However, the cancellation mark reduces its value compared to unused examples. The provided range reflects the typical market value for used commemorative stamps from this era.