I think...BC 1 ...BC 2 ... BC 3... or you could use the alphabet BC A ... BC B... or or you could use band member names Malcom Young ,, or Angus or Roger Waters OR OR...
Ok I can see why naming things can be a pain in the aarse LOL
But it does help on this end.
That being said its a excellent marketing idea ... DO I have that one or not...hmm better buy it just to be sure....You could sell me same one a few times
So maybe the old eastwood movie "fist full of dollars"