Antique Art Deco glass button cabochon jewelry impression die hub mold trefoil

Antique vintage Czech ornate art glass button cabochon jewelry making steel mold die press stamp. 
It could still be used for press molding glass buttons, cabochon beads or jewelry findings, art design, home decor or for general hobby crafting with metal, clay, resin, plastic, plaster, leather or soft metals. 
Size: 28 x 23mm; 1.15 x 14/16 inch
Finished Button size: 11/16 inch
Material: steel
Year: Vintage cca 1920's
Origin: N. Bohemia / Czech
Condition: Authentic original vintage condition
Quantity: 1

This is a collectible unique steel impression die negative, originally for use in the production of press molded glass buttons, beads or cabochons. The negative was intricately hand-engraved and was used to create the actual mold in a softer metal that would then be set in long metal pliers and used to hand press fancy glass buttons, beads or cabochons.

It will reproduce a new negative today would cost at least $ 2000 for paper design, engraving, finishing and patenting.