Fully serviced by Audemars Piguet in London and under their international warranty for 2 years, this ref. 25570ST is from the early years of Royal Oak Offshore production. This solid steel 42mm ROOS has the distinctive first series case with the cool industrial cut-out for the strap that hugs the wrist much more snugly than the later models. This classic model also sports the original silver/grey dial (with under crystal date magnifier) that oozes vintage cool. In superb, crisp condition, this mighty Offshore is fitted to a brand new black Audemars Piguet calfskin strap with steel AP logo folding clasp.