The number 307 in white appears on recto. The photograph is titled "The Allah Verdi Khan Bridge" on verso, in what may be Antoin Sevruguin's hand.
Publications
Myron Bement Smith Collection: Antoin Sevruguin Photographs. Freer Gallery of Art and Arthur M. Sackler Gallery Archives. Smithsonian Institution, Washington D.C. Gift of Katherine Dennis Smith, 1973-1985. Museum number: FSA A.4 2.12.GN.40.05. Handwritten number (inked, probably by Antoin Sevruguin) reads, "641." "Pul-i Ali Verdi Khan (also known as the Bridge of Julfa and the Pul-i Chahar Bagh)." [Freer Gallery of Art and Arthur M. Sackler Gallery Archives, Curatorial Research Assistant].
Titled "Si-o-se Pol bridge over the Zayandeh at Isfahan" with the number "307" in white also appearing on recto. Located in a travel album by Hendrik Dunlop (1867-1944) with pictures of sights in Persia (Shiraz), Scotland, Germany, Russia, China and Canada. The album, which forms part of the Rijksmuseum collection, contains 31 pages with a total of 62 photographs with landscape, city, village and harbour views in Scotland, Germany, Russia, China, Canada and Iran. Dunlop was a partner of the textile company Groeneweg, Dunlop & Co. and a representative of the Dutch trading company JCP Hotz & Zoon, which was located in Shiraz.