This float has a unique feature.  The Cobalt Blue Seal has an Amber Swirl in it.

It appears to be an older float with lots tiny of bubbles, some net pattern frosting, and the shape is slightly out-of-round.

The float measures 3 1/4 inches in diameter and is an unusual green-grey color.

There's a dot on the seal but unsure if it's an intentional stamp of the single dot mark WP #252.

Found in Alaska.