old spectator shaped key memory of the Casimir Pulaski Museum in Warka (Poland), on the slide"" Poland"" in different languages, with 14 slides miniature black and white with exhibits of the museum, visible through a micro -Lens, on the other side a small lever to advance; plastic, metallic gold; dimensions: length: 21 cm, maximum width: 8 cm, in green plastic box, dimensions: 20.5 x 8 x 2 cm. Casimir Pulaski (1745-1779) was a Polish nobleman landowner, one of the leaders of the Confederation of Lawyers of Poland, and a general of the Continental Army in the American Revolutionary War. Casimir Pulaski Museum in Warka was opened in January 1967. The image viewer is probably the late 60s to the 70s.