Haulticoeur stereoscopic viewer for slides and pictures 3 1/2 x 6 inchs. Wooden and decorative. With a 6 1/4 inch magnifying lens used for viewing the ordinary postcard pictures. Special box-type carrier used for viewing and a hinged mirror. Focusing by rack and pinion. Martinet and Haulticoeur. c.1908. Haulticoeur stereoscopic viewer