This image appears in colour in “Autour du monde, aquarelles, souvenirs de voyages XL, En Perse. Types, costumes et Moeurs” published by L Boulanger, Paris, c1890 and is titled “Teheran, Procession de Derviches Martyrs” (CCCXV). The photogravure is from a set of eight Persian images by Antoin Sevruguin and was printed by Charles Gillot (1853-1903), a Paris based engraver and art collector who incorporated the photographic discoveries of Daguerre and Niepce into his engraving techniques and ultimately perfected a process for reproducing book illustrations in colour. The number "49" in white ink appears on recto.
Publications
The image is reproduced on page 151 of Volume I of “Du Khorassan au pays des Backhtiaris: trois mois de voyage en Perse” by Henry-Rene D’Allemagne published in 1911 by Hachette, Paris, France. The image is titled "Groupe de penitents attendant le depart d'une procession".