Vintage 1970s Hypnotizing Machine!  It has been tested and works. Unsure on the exact era (1970s?) or who it was manufactured by. The top is stamped with U.S.A. The bottom is a heavy metal piece that is marked Taiwan. The parts where the screws go in are plastic. This requires two "D" batteries which are included. Total Height Measures Approximately: 10.25" Spiral Measures Approximately: 7.75" wide Machine Measures Approximately: 7.5" tall (Without spiral)Please feel free to message us at anytime for any questions or comments!