Transparent forest green indented square beads

These vintage glass beads were made in Czechoslovakia during the 1960s in molds. This is a curiously shaped bead. It is sort of round, sort of square and very fun! It is as if someone took a 15 mm round bead and squashed it on four sides. The indentations are symmetrical and the bead is perfectly smooth. It is 15 mm from hole to hole and 11 mm wide. Price is for 10 beads.