Rolex Oyster Perpetual 6567

An 'Oyster Perpetual' wristwatch by Rolex , circa 1955, the circular textured dial with gilt faceted baton markers, tapered luminous insert hands and centre seconds hand, to a calibre 1030 automatic movement numbered 550856, the case stamped '9K 0.375' with Swiss gold mark, case ref. 6567, the shoulder indistinctly numbered 10326?, on a later unassociated leather strap, case width 3.3cm