Vintage Czech elastic 3 strand bracelet black white blue clear glass beads

Vintage Czech hand beaded elastic 3 strand bracelet with a super selection of assorted clear, blue, black and white glass beads. With original paper identification tag.

Origin: Vintage Czech 1960's
Length: 7" approx. 
Size: Beads: 4 - 16mm, 2/16" - 10/16"
Material: Glass. 

This bracelet is on a library sample card from the now finished Zeleznobrodske Sklo company of Gablonz. The ZBS company was an amalgamation of hundreds of independant glass makers enforced by the communist regime in the 1950's. The nationalised company controlled all sales of glass products worldwide. 
Every bracelet made had a library copy, of which this is one. The cards will often have hand written notes with lengths available, beads used, costs and weights. 
The beads on bracelets such as this are often older than mid century as the company took all supplies of beads they could find under control with stocks from the turn of the century included. 
The bracelet is sewn on to the card and must be removed carefully by cutting the cotton on the reverse side of the card. These have been in storage for 60 years and there is no guarantee on the stringing. This is a unique and historical product.