This Rolex Oyster Perpetual Air-King reference 5500 is a 3.6 million serial dating it to 1974.  The watch retains its original silver burst tritium dial and handset. The watch is on its folded link bracelet with the code 7835 19, 357 end links and full 13 links present with very little stretch. The 34mm case houses Rolex's in house Cal. 1520 movement. A very nice example of the iconic Air-King model!