This 1979 Rolex Air-King (ref. 5500) bears a co-branded dial with the Pool Intairdril Logo. The Pool Intairdril watches are quite rare as they were produced by Rolex in the late 1970s into the early 1980s for Pool Intairdrill which was an oil servicing company. Pool Intairdrill supplied the labor, rigs, plants, etc to the big named oil companies, ie Oxy (Occidental), Agip, and the Libyan NOC (National Oil Company). These watches were given to Pool Intairdril employees typically as safety awards. Safety was a huge issue, each rig was proud of its run of accident-free days and rig managers and other personnel in charge of safety management would be given the Rolex Air kings with their names engraved into the case back along with a certificate of commendation. 

CASE & BRACELET

The crisp case exhibits light signs of honest use, but no notable signs of being previously polished and features its original factory finishing and dimensions throughout. The smooth stainless steel bezel shows some expected signs of use and appears to be unpolished like the case. The case back remains in excellent condition with its original "Safety Award" engravings from when the watch was originally awarded in 1982, the engravings remain deep and unaltered. The watch comes supplied on a 2pc handmade leather strap. 

DIAL & HANDS

The original "Pool Intairdril" silver dial is virtually flawless, showing no age or damage. The "Pool Intairdril" logo remains fully intact and vibrant. The tritium lume plots feature a handsome creamy-yellow color and exhibit no degradation when inspected under UV light. The original tritium hands match the dial perfectly and display no lume loss or degradation under U.V. light inspection.

ACCESSORIES 

None. The watch is keeping time perfectly, backed by a 1-year warranty on accurate timekeeping.