Cardboard Stereoscopes (various)

handpicked selection of six rare souvenir-type stereoscopes, all in fairly good condition, due their age some wear at edges and hinges, (1) the sought-after German folding stereoscope 'Helioplast' in near mint condition, made of linen covered cardboard, (2) French box-shaped miniature viewer 'Stéréoscope' covered with embossed red faux leather, comes together with a set of metal framed slides, (3) beautiful Italian 'Stereoscopio per Cartoline' covered with embossed red faux leather, (4) French 'Aristoscope', together with a set of original cards, (5) Czech box-shaped viewer labelled 'Steroskopickych obrazu' with a very nice makers label on the cover showing mother and child looking through a stereoscope, with a set of original cards, (6) unusual basic folding stereo viewer labelled 'Le Stéreórama' with nine slots on each side to focus the stereo cards. (6)