This float is called JA Fish.  It's also called J Fish A.  The maker's mark is stamped on the base of the float opposite the the seal buton.

It's a 5 inch float that's a lovely olive green color.

Here's an exerpt from Facebook by David Neff on the the possible origin of these floats:

Very good chance in my opinion that the J fish A float came from Jul. Albrechtson Co. in Gothenburg, Sweden.  Thinking that so many turn up around the West coast of Sweden.