The Royal Oak Offshore 26237ST.OO.1000ST.01 was introduced in 2017 in celebration of the 25th anniversary of the Offshore series. It closely follows the design of the original 25721.ST.O.1000ST.01, although crown and pushers are now done in ceramic instead of rubber.Edit January 2018 - it appears the pushers are no longer ceramic, but rather rubber-coated.