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). The 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 strong and symmetrical case remains unpolished, retaining its original factory finishing with light signs of use. The smooth stainless steel bezel is unpolished as well, showing honest signs of light use. The unpolished case back retains its original "Safety Award" engravings from when the watch was original awarded in 1981. The watch will come supplied on a 2pc handmade leather strap. 

DIAL & HANDS

The original "Pool Intairdril" silver dial is in exceptionally well-preserved condition and has achieved a beautiful warm patina. The Pool Intairdril logo remains fully intact. The tritium lume plots have taken on an excellent yellow patina and exhibit no degradation when inspected under U.V. 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 has just received a full service and is keeping time perfectly, backed by a 1-year warranty on accurate timekeeping.