Congrats Wilco, That's a beautiful piece.
I feel much better now, I saw that one and thought looooooooooong and haaaaaaaarrrrrrrrddd about pulling the trigger on it but I'm glad you are rebuilding your collection AND got a sweet deal on it!!! Plus I've been finding to many good deals lately, I need to pass on more of them.
BTW I think that one will turn out to be INFI. I have a 5/16 A2 and a 1/4 INFI SH-BA and I have noticed on mine and others that if you look at the line of the grind just in front of the talon hole, if it is a curved line it has been my observation that it is INFI and if it is a straight vertical line , then it is A2. Yours curves toward the tip.
Someone may come along and correct me on this but it seems to work as a decent rule of thumb on the BA.