I came across one example of this mold about 10 years ago (from a Montana card room, of all places). At the time, I didn't know it was that rare as I had no idea about such things back then! I would have snapped up more if I had. I showed it to Howdy, he had never seen it, so I asked him if I could name it (founders priviledge!). I thought it looked like an old oil can, hence my preference.