@buroak, thank you for starting the thread! I had no idea of its existence until this morning when the pipe on eBay caught my eye. It is a larger piece than is usual for shape numbers in any grade in my experience, and I suspect it is a later - in a relative sense - piece, though I would not hazard a guess as to when it was made. BTW, I do not mean to place that pipe in a negative light in any way.