Originally Posted by johnclayton1982
This is correct. My buddy plays some old wedges as part of his iron set and used them in the Zurich qualifier. Nothing wrong with playing old wedges so long as the grooves on those particular wedges don't violate the rule.
Its not that some wedges are "grandfathered" in and some arn't. You measure the grooves or check the list. Its OK or its not. Date of manufacture is irrelevant I believe.
No, date of manufacture is important with Ping Eye 2 wedges I know for certain (I looked it up when buying my irons). During a period of time in the 80's, Karsten made grooves that were technically illegal but fit within the rules at the time. The rules didn't state how the distance between grooves was measured, and Karsten measured them from wall to wall instead of top edge to top edge. Because of this, he actually rounded out the top edges of the grooves such that, on the face, the top edges of the grooves were too close to be conforming if the distance was measured from top edge to top edge. The USGA threw a bit of a hissy fit about it, and Karsten was required to change his design to stay conforming. However, the older wedges were grandfathered in after a court settlement, making them legal for play.