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An unsigned Ansel Adams photograph can be authenticated by experts in photographic art, particularly those specializing in Adams' work or the history of Photography. This may include reputable appraisers, galleries that have represented Adams, or institutions like the Ansel Adams Gallery. Additionally, provenance documentation, such as previous ownership records or exhibition history, can help support claims of authenticity. Ultimately, a consensus among several experts is often sought for validation.

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3w ago

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