I found it. It is the same as the BB.
It's just a mild steel flange on a stump. The stump has an accidental cut that needs to be welded up (got the saw crooked when I was cutting it off), and it's very unattractive, but the price is right.
I'll go ahead and ship it in the next couple of days (I should still have your address somewhere) and I'll let you know how much. I'll use USPS so it shouldn't cost much at all.