It is an authentic used tri mold glass fishing float. It is not marked with a manufacturer stamp but has the small style small seal button! Very rare
RARE 3.12 inch Tri-mold Japanese Glass Float Small Seal Button (#2163)
GLASS BOTTLE MARKS ~ Antique & Vintage Glass Information
Glass Fishing Floats - Canada
Authentic Floats
Glass Fishing Floats - Canada
Antique Glass Fishing Floats for sale
Glass Fishing Floats - Canada
Antique Original Antique Fishing Floats for sale
MIRACLE SEALANTS GRT-PEN-WHT 100078745
RARE 3.12 inch Tri-mold Japanese Glass Float Small Seal Button (#2163)
Glass Fishing Floats - Canada