I don't own it yet. It's out there, and I thought about buying it, but I can't bring myself to part with the $135 or so shipped. From the one shot of the tang stamp already included in this thread, look very closely at the shoulder, I think it's called. It looks VERY much like a couple of 165s I have that had the original tang stamp ground off for who really knows what reason. The grinding process sharpens the transition from choil to the primary grind. In addition, the primary grind line seems to dip down where the original stamp would have been, which would be consistent.
I could go on about the ones I've seen with removed stamping... But, this one, to me, looks like it might have been ground off, and then restamped in this orientation.
I had just never seen one before.
Greg