This page will be dedicated to American made floats, or those from other countries that don't fall into the "Japanese" or "European" categories.  I will add photos & information as I can.

Russian float with the 3. mark
This is a "pumpkin" float.  The origin of the pumpkin is still unknown,
but they are believed to be have been made in Japan.  They
characteristically have patches of glass on them.
Photo from John Herreira.

Russian side marked star with dot.  I found this on a remote
Alaskan beach.  It has a crack, but still a gem!