Posted 3 years ago
These glass boxes were produced by Franz Welz in Czechoslovakia circa 1925 to 1935. They have a distinctive line decor, also called line and confetti decor.
In the making: The base glass is "punched"by a vice tool or mold to create vertical indentations. The glass is rolled over ground glass (fine) then lager (coarse) chips of glass for contrast. When the piece is blown fuller, the indentations spread-out to show the base color and expose lines. The piece is then coated with a clear coat of glass (either molten or glass chips) then put into a mold to shape. Welz had amazing glass workers and supplies, they created glass with lots of depth and saturation of color for how thin these pieces are- 5 layers of glass in 2-3 millimeters of thickness.