Anyone have info on this old wind-up?
 

Trying to find out about this old wind-up toy. There's no real information on the box or toy with maker info. The only clue is that it was made in Taiwan. The box simply says "Animal Seesaw", but the animals are definitely Doraemon and Dorami from the old Japanese manga and anime series that started in the late 60's. Being made in Taiwan and the characters, I'd say this is from the 70's or early 80's, but I can't find any info on it aside from a guy selling one on eBay at a steep price.

Anyone know where I could get more info on it?