Audemars Piguet Royal Oak Perpetual Calendar 25554ST Circa 1987, early C28XXX serial, excellent and sharp case that has been polished in the past and shows light wear from use, excellent original and very rare silver dial with old font AP writings, excellent original bracelet with matching clasp that doesn't show any stretch from use, original "no logo" crown, the watch is currently being serviced by our watchmaker, perfect conditions