Antique Victorian Czech square black glass button lacy style flowers 18mm

Antique Victorian Czech square black glass button with abstract lacy style floral detail. This button was hand molded using a hand engraved steel button mold and has incredible fine detail. Each button was hand pressed using button pliers before being hand trimmed and polished. Made by the Gebruder Mahla export comany of Jablonec, Czechoslovakia in the 1880's - 1900's. A premium quality vintage rare Czech glass button, demonstrating the skills of early C20th glass button makers. In excellent original condition.
Origin: Northern Bohemia circa 1890's
Size: 18mm; 11/16" 
Material: Glass
Shank: Metal box 4 way