Unknown ratchet head

[seber]

Can anyone identify this 3/4" drive ratchet head? It has no markings at all. The inside is similar to vintage SK or Proto.

 

[Xcursion88]

I think that is a proto

 

[3baygarage]

It should be a Japanese import. Not sure the maker, but they copied the Craftsman ratchet head and made 3/4 ratchets in many different brands. Some are one piece and some with the removable head.