Answered my own question. Register your irons using the number on the hosel not the number on the authentication sticker.
Romain's Scotty Cameron Tour Rat putter - nice!
Titleist ambassador Romain Wattel always has a smile
Great to see Titleist ambassador Paul Waring back after a year out with injury!
....and the face.
The clubhouse at Royal Portrush Golf Club
A quick peek inside Romain's bag
Staffer Lee "Slatts" Slattery in good form and good humour - fresh from qualifying for the Open
Gregory's Super Rat from the back....
Staffer Gregory Bourdy dropped by the truck to show us his new Scotty Cameron Super Rat putter complete with US Open headcover.