This clockwork driven curiosity has been in my family for 4 decades. I bought it from a coworker for 12 dollars when I was 19, and gave it to my Mom for her birthday. I forgot about it until recently she came upon it while cleaning out a drawer and showed it to me. I've borrowed it to post here for your entertainment and for whatever info people may have on this sort of curio.
On pushing down the crown, the hand spins with a kind of cicada like noise, and when you release the crown, it stops, red or black. It follows a really random pattern. You can't predict it.
I'm gingerly trying to get the back off, but its not cooperating. I'd like to have a look at the works.
It's not really a watch, and it's probably not complicated, but it didnt fit anywhere else so I'll post it here.