hello Jamey
I understand they are using different molds for every item, some leaving an equatorial seam, others with the seam at one end of the bead, But all those beads are made with the same technique, using the same paste formula and they all are looking like ceramic, so why should we call one Prosser and not the other one ? is it just a mold question?
From what I have read and when we were buying in the factory in Jablonex they were not making any distinction between their numerous products, only naming them differently, the round ones you mentioned were called "oriental beads" the other ones "tile or rocaille"
Actually neither the French nor the Czech use the word Prosser for their products,they just used the method he patented, but Prosser beads will be a name to stay even though Prosser himself never made any beads
JP