Gingerbread Chain with Black Glass Faceted Beads, 4mm Beads, Vintage

I love this gingerbread cable chain with jet black colored glass beads. The beads are 4mm. 3x2mm links will work best with thinner jumps (approx 21 ga instead of 18 like our standard fare.) I do find that I can get a thicker jump through if just attaching a clasp. There is about an inch and a half of chain between each bead. This is vintage chain, strong, possibly steel under stable copper coat. Probably 35-40 years old. Sold by the foot.