Omega Caliber 30T2 260 Hour wheel Part No 260-1231 N.O.S

Vintage Omega Caliber 30T2 260 Hour Wheel part no 260-1231. purchased in the uk 15 years ago part of a watchmakers estate which this item was part of a Military 30T2 parts kit. Would need to be run through the watch cleaning machine due to age but never used.