23mm Czech Bohemian antique Victorian faux marcasite black art glass button

23mm Czech Bohemian antique Victorian faux marcasite black art glass button. This button is by Gebruder Mahla of Jablonec, one of the best known names in Victorian Czech glass buttons and is in excellent original condition. Some rough molding edges still. Similar examples are in the Museum of Glass in Jablonec.
For collecting, making jewelry, fashion design, sewing, art and crafting.

Origin: Northern Bohemia circa 1900's
Size: 23mm; 14/16" approx 
Material: Glass
Shank: Metal box 4 way