I have a bunch. Various colors/patterns. 
 

 

Looks like a line twister. 

Helin Flatfish. Similar to a Lazy Ike, made in Iowa.

It looks like a flatfish, but the fins on the sides and the fisheye at the back are different. I’ve not seen a flatfish with them which makes me think they are a knockoff or other variation from the original. 
 

either way, they are big for walleye and steelhead/salmon guys trolling. 

I'm in the same camp as Cast by. It's not either a Helin Flatfish, Heddon lazy Ike or Worden's Flatfish. With that eye and the dorsal fin type I have never seen before.

FM

 

It could be some sort of knockoff of a Flatfish.

I had a similar one as a child and I think it was called a pollywog? Or something like that? Its been 40 years so my memory is fuzzy.

 

Allen