Offered here is a 1998 Scotty Cameron Newport "OFS" stamped X for set 10.

Vog says: In 1998, after Scotty and Titleist offered 500 copper plated sets in 1996 and 100 pro platinum sets in 1997, he decided to add some exclusivity by subtraction. He did just 10 sets of 8 putter models marked OFS for Our Finest Series. He used a polished pro platinum finish which looks fairly close to his black star finish. Each putter was chosen as a favorite of a specific tour player. This is the Newport model, which was the putter of choice for David Duval, who won 3 consecutive evens at the end of 1997 with the Newport. This one was stamped X on the toe, but I believe I have seen other putters from the 10th set that were stamped 10. Apparently Scotty used the X stamp (roman numeral for 10) and "10" as well. This along with the Newport 2 are arguably the most popular models from the set. 

Condition is 9.5 out of 10, unused, in 35" length.