they are Venetian on the original stringing, as i think your first lot were as well. i handled many coarser and finer beads like these in the 1990s (before the chinese began such copies) within the antique trade context in London when i used to have a shop in Portobello Road, and often some of the beads were slightly irregular at either end. This strand even appears to have the small original Venetian-made spacer beads between.