Vintage European necklace of faceted glass beads

This necklace is made up of about 10 sizes of faceted beads, interspersed with seed beads, strung over about 19 inches. The colour is a deep black, with just a hint of smoky grey. On the part of the closure without the clasp I can make out characters that I believe tell me the necklace was made in Czechosolovakia (this also concurs with what I find about this style in online research) The necklace is in excellent condition, with both the stringing and the clasp very secure.