Lot (6) Czech vintage black geometric swirl hand molded glass buttons 23mm

Lot of (6) 23mm Czech Vintage black geometric swirl hand molded glass buttons. In good condition and good examples of late C20th century Czech glass buttons. These were hand pressed using the original antique molds and traditional techniques.
For jewelry making, fashion design, sewing and crafting.

Size: 23mm; 14/16"
Material: Vintage glass. 
Shank: self shank
Origin: N. Bohemia / Czech
Year: Vintage cca. 1960's
Condition: Original authentic condition. 
Quantity: 6