Parallax Stereogram by American inventor Frederic Eugene Ives, starting price is €800 at Auction Team Breker in Cologne on October 30-31.
Using two parallel images each divided into extremely fine alternating lines, created the impression of a three-dimensional representation.
A fine example, a 6 x 8in (16 x 21cm) image of an outlaw pointing a revolver, comes up at Auction Team Breker in Cologne on October 30-31. The starting price is €800.
