Hey Ron,
I missed this as I was of to a show, and have not caught up yet, this is what I would cal an M17, but I may be wrong, but it is not an M15, it is in decent shape, the one I got for $150 is a bit nicer, but I stole it in my opinion. In the other thread, you mentioned $450, I would say that might be a resonable price, the condition of the head, is not really that bad and the stick is excellent.
Best
Gus