Rolex, Cosmograph "Zenith" Daytona, "Inverted Six" Dial, Stainless Steel, Ref. 16520, circa 1990 Case: stainless steel, 40mm, stainless steel, three-piece, brushed and polished, tachymeter bezel, screw down crown and pushers, screw back, E955181 Dial: white, tritium indexes, subsidiary dials with black tracks for the seconds, thirty minute and twelve hour registers, luminous steel baton hands Movement: Rolex caliber 4030, automatic (Zenith El Primero base), 31 jewels, certified chronometer, adjusted to five positions plus temperature, nickel finish, Swiss lever Band: Rolex Oyster, 13 links, deployant clasp Signed: Rolex on the case, dial, movement and clasp This timepiece is accompanied by inner and outer boxes and original hang tags HID03101062020 © 2020 Heritage Auctions | All Rights Reserved