This maker's mark has three symbols: 'Z' - Shi シ - Saサ. I think this is an undocumented mark.
It's a standard blue-green 3 inch float.
Beachcombed on Kunashir Island, Russia.
Z - Shi シ - Sa サ, Undocumented Mark, 3 Inch
Written by Keith Glein
Additional Info
- Maker's Mark: Undocumented Mark
- Shape: Glass Ball
- Color: Blue-Green
- Size: 3 Inch
- Rarity: Uncommon Maker's Mark
- Country of Origin: Japan
- ID (optional): 2014-06-03-01 Glass Float Museum
- Retail Value ($): 100
- eBay Auction ($): 50