L’Iris stéréo­scope à manche is a fine­ly dec­o­rat­ed lorgnette-style stere­o­scope. The view­er was dis­trib­uted by Gus­tave Jacob, who also mar­ket­ed Lucien Bize’s stere­o­scopes. Man­u­fac­ture by Bize there­fore can­not be ruled out, since L’Omnium dates from the same peri­od and Bize ini­tial­ly spe­cialised in the pro­duc­tion of met­al viewers.

One known exam­ple of L’Iris stéréo­scope à manche bears the ini­tials of the pub­lish­er G. P.

(from: Com­pendi­um of Stereoscopes)