The well known Hammer & Sickle mark is a real mystery. Although floats with such sided mark are called "Russians" nobody can give any real facts about their origin and usage in the Soviet fishery. From the other side the H&S sign is the mark of the Soviet Union. China and Korea didn't and don't use it at all. But Vietnam uses it.
The float is crude with scabrous texture, bi-mold. It has a small seal button.
.