Stereoscopic viewer “Stereoscopes Paris”, 1910, France

An appliance to view a pair of stereoscopic images, invented in the first half of 1800 and later developed further to allow negative and positive image viewing.

Through the two adjustable eyepieces, a flat image can be viewed in 3D (stereogram), including by the use of internal mirrors, but which this particular example does not have.

This extremely rare item has been perfectly conserved and still has the original stereograms produced in Central Africa and Montenegro.