No expert here but do collect Vintage beads and Jewelry. Here are some identical or similar necklaces. I look for the knotting between beads, how it's put together, the color and condition of the beads- if the color-wash (gold or contrast color) has rubbed off, been cleaned off or even re-applied. They seem to break string where the two base tassel strands attach/split off, so check that. You did great- very Pretty!

It is possible to find modern Reproductions of many of the same beads or Vintage beads for repair. But one put together with "new" beads should be obvious, as should one that has been restrung. It is always best to find a necklace original and intact from a Value standpoint IMHO.

Info link from here in the Forum and also pics from ETSY, eBay, Pinterest.(in case you have not and for others) Check out excellent Forum posts from "Floorkasp" on the Czech Bohemia Glass Factories. Bead Cards and lots more: "Jablonec 2012: Trip Report" 7/29/2012:

Note of the two necklaces similar to yours the differences in tassel end bead length- guess it is easy to lose a few beads or maybe they made variations?

Click on photos to Enlarge!

http://beadcollector.net/cgi-bin/anyboard.cgi?fvp=/openforum/&cmd=iYz&aK=87581&iZz=87581&gV=0&kQz=&aO=1&iWz=0