This Moon Pop mechanical was produced by Rosen during the 1950s. It was sold as part of an omnibus Moon Pops boxed set comprised of 45 Trix or Treats cards, 9 suckers and 9 of these mechanicals. (What makes it a mechanical is that part of the witch's cape can be moved up and down.) The graphics are interesting. Because it was meant to stand, it can be part of en eye-catching display.
05/09 Update: This sold for $403.50 with a number of bidders going FAR beyond SGV of $50. This is a result that I don't understand. These Rosen items come up with some regularity. The seller was quite fortunate.