I too was wondering about this too.I

A very good reason to deal with your local authorized Titleist account.  If you do come across any fake products please report them here

http://www.titleist.com/customerservice/counterfeit.asp

John P,

Compare the hosel lengths for all your irons. The AP2s have variable hosel lengths which get longer going from 3-P. That seems like a difficult detail for even the best counterfeiters to notice.