With Rolex original guarantee and original invoice of Williams, Jewelers Of Brookrigde, Colorado , both dated 30 July 1987, seal, Rolex Oyster and Rolex Explorer booklets. Furthermore delivered with Rolex original fitted green presentation box and outer packaging.
The present Explorer II model is from the very first series of reference 16550, introduced into the market in 1985 and replacing reference 1655. It features the much sought after ivory dial, also called "rail dial". The name is derived from the warm ivory-colour of the dial in conjunction with the symmetric division of the two lines below the centre: "Superlative" and "Officially" to the left, clearly separated by a vertical space (thus "rail"), and "Chronometer" and "Certified" to the right.
The "ivory" or "rail" Explorer II models were produced in a very small series only and are considered highly collectable in today's market.