This is almost surely the only legitimate German Halloween mechanical I've seen on this forum in years. True vintage mechanicals are rare and should be well-worn. There are a few dealers who routinely offer this genre of items on eBay. Their offerings are dubious - outright fakes or mash-ups. If you are inclined to buy these kinds of things, be VERY cautious.
Mark B. Ledenbach's vintage Halloween collectibles blog.