The number 387 does not appear on recto. The photograph is titled "Yazd-i-Khast" on verso, in what may be the hand of Antoin Sevruguin.
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.35.06. Handwritten number (inked, probably by Antoin Sevruguin) reads, "387" on glass negative.
Titled "The rock built city of Yazd-i-Khast" on a halftone print in a 1926 catalogue.
Titled: "Village Yezde Khasi, entre Chiraz et Isfahan" in an early 20th Century postcard by C. F. Prins in Tehran.