VTG 1920s 30s Czech Black Beaded Flapper Necklace

Lovely Estate acquired piece. unusual length, features hand cut glass beads, graduation in size. Please not that some of these beads are odd in shape, that is due to their handmade process and wear over time. Some of the stones have imperfections and light chipping, but nothing really stands out unless looking very closely. Strung on original cotton? Thread. I believe these beads are from Czechoslovakia. Please see all photos for reference, this is a really beautiful piece.