Iron serial numbers

Joseph B
Joseph B post: 7 May 2012 12:54 PM
I own two sets of Titleist MB irons. My 690 MB irons have the serial number on the 6 iron. However my other set (bought in 2001) has no serial numbers on any of the clubs. The set is the limited edition/production of the Tiger Woods irons (681 MB). It is the limited production set that has a "T" on the blade. Can anyone tell me why these irons do not have a serial number?
laurent p
laurent p post: 15 May 2012 8:44 PM

All titleist sounds to have serial on N6 hosel, whatever i have a 681 wich have number on all hosel ?

i realy dont know what it stand for ?