3D Roto-Vuer

United States, 1950s

Ster-e-o, Inc. created this unusual-looking, royal blue multi-slide stereo viewer out of Seattle, Washington. The viewer is made of rigid, shock-resistant styrene plastic and the replaceable slide carrier holds 60 Realist-format slides. Even more unusual is the battery box which holds 2 - 4 “D” batteries that light up the two interior light bulbs. The viewer also features focusing.