Rolex Air-King Ref. 5500 Men's Steel Vintage Watch Color:Silver It features day

It features day

503BC which also featured a blue dial by the yellow/orange 5-minute markers on the 30-minute register as well as the applied metal markers and white minute-marker ring

The watch's US connection is further strengthened by the letters "OXG" found on the movement

this Rolex Oyster Perpetual Ref

The glass of the watch & lizard skin strap would also be described as excellent

Rolex Air-King Ref. 5500 Men's Steel Vintage Watch Color:Silver It features dayOften known as the Warrior Watch, the Rolex Air King has a long and storied history dating back to the mid 1930s. Originally developed to honour the British fighter pilots during World War II, the Air King is praised by collectors for its simple athletics, accuracy and robustness. The reference 5500 was introduced in 1957 and used one of two movements, the 1520 or the 1530. You can tell the difference between the two, not by looking at the movement