This is a 'Medium' sized Bubble Sausage.
It measures about 9 3/8 inches around whereas a regular bubble sausage is about 10 inches around. This float is 4 1/2 inches in length.
The float is clear in color with just a little pink tint, probably from being sun-turned.
Found in Northern Japan.
This float has excellent provenance having come from the ex-Col. Rich Richardson collection.