Incised French-blue bicone beads

These are vintage German glass beads made between 1919 and 1938. The bicone is six-sided and each side has a slight incised stripe pattern. The color is a lovely mix between opaque and translucent. The color really is luscious and these old beads are disappearing. The bead is 12 mm long and 12 mm at the widest point. There are about 10 beads on a strand.