| Unknown photographer (American) Double-Exposure Portrait of a Woman 1860 (ca) Daguerreotype 6.4 x 5.1 cm (2 1/2 x 2 ins) J. Paul Getty Museum Object number: 84.XT.1582.13 LL/62882 Nigel Russell (Facebook, The Daguerreian Society, 23 November 2015) stated "There was actually a patent for this technique - the result was suppose [sic] to resemble the face cards in a deck of playing cards."
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