This is "Opus Z" by Arny Weinstein. This beautiful parlor kaleidoscope is made of hardwoods and has a turning, fluid-filled 3-1/2" in diameter object cell that includes colorful lampworked glass pieces, has a black background and is side-lit. The chorus line image created from this 4-mirror system is a 3-dimensional column of wonderfully changing colors and designs. This scope measures 16-3/4"T x 13-1/2"L x 6-1/2"W. It is signed (A. Weinstein) and marked 1/10 by the artist. This kaleidoscope is removable from the base and also rotates freely on the base.