Pop art kaleidoscope designed by Ernest Trova for the Museum of Modern Art in New York circa 1966.
Web info:
https://www.moma.org/momaorg/shared/pdfs/docs/press_archives/3765/releases/MOMA_1966_July-December_0071_122.pdf?2010
Height: 8 3/8"
Diameter: 2 1/4"
Excellent used condition: minimal wear from use, see photos. WA7a