Oyster Perpetual GMT Master 'Pepsi' model 6542, stainless steel case, signed Rolex calibre 1030 automatic movement, 1957 from serial number between lugs, round black dial with lume plots, triangular and baton hour markers, date aperture at 3, outer seconds track in white, stainless steel lume-filled Mercedes hands, stainless steel sweep centre seconds hand with lume plot, red GMT hand with stainless steel lume-filled pointer terminal, red and blue bakelite GMT bezel with 24 hour scale, screw-down crown with coronet, on a hollow-link Oyster bracelet strap with 280 to the end links and 7836 to the first links, with a signed Rolex foldover clasp numbered 270, no box and papers