Here is a great stereoscope used to view stereoscopic 3D cards that were popular at the turn of the century. This one was manufactured by Underwood & Underwood of New York, and the latest patent date listed is October 11, 1904. This stereoscope is in perfect working condition and operates great. The handle, which folds open and closed, is a bit difficult to fold, so please use care and sturdy grip when manipulating it. Otherwise, this stereoscope is a in great shape with minor signs of wear from normal use and handling.
The photographed stereo card is not included with this item. However, many stereo cards are available for purchase from Memory Hole Vintage.