That's one of the problems with bongs, or tubes as we refer to them in the glass world......... There's a LOT of bong makers now! TONS of em! All they have to do is spin it on a machine and sandblast a label on it. Could be a one off, could be the model of it, could be anything.......... Most likely it was a local-ish-to-you-ish shop that made a few and never really gained any notoriety but make a nice product.