Catalogue Page from Exhibition Catalogue: 1907 Fifty-second Annual Exhibition of the Royal Photographic Society of Great Britain

showing (E07A057) Exhibit no. [727]: "Mignon" Reflex Camera, 3½ x 2½, fitted with six slides, and No. O 4¾'' Planastigmat Lens working at F/6.8 focussing jacket by O. Sichel & Co. ()