Tru Vue - "Pictures with Depth"

Picked up at auction , the left viewer is one of the original models and dates back to the early 1930's (The Tru Vue company was formed in 1931). The other model probably dates back to the 1950's . (Tru Vue were effectively incorporated into Sawyers - theViewmaster makers - in 1951).

The viewers are valued between 5-30 GBP.