Clear bold stamp of 'Maru Ri' り.  This mark has been classified as WP #281 in Walt Pich's field guides.  He notes that this maker's mark has been identified on 3 1/2 inch balls and is uncommon.

This example measures 2 1/4 inches in diameter.  It may be one of the only documented specimen of WP #281 on a 2 inch size float.

This netted float is pale blue/green in color; it's almost clear.

Found in Northern Japan.

This float has excellent provenance having come from the ex-Col. Rich Richardson collection.