Smiths Everest automatic (1963) Current Collection The ref 5500 Explorer represents

The ref 5500 Explorer represents excellent value for a 1960s Rolex sports model

I must draw attention to two small marks at the bottom of the dial under the 6 numeral and another small mark at the 7 minute position

Waterproof: yes

this means it doesn't have a battery

it does not have any presentation inscription so it must have been a private purchase

Smiths Everest automatic (1963) Current Collection The ref 5500 Explorer representsThis is an outstanding example of the elusive Smiths automatic in the heavy gold case. This watch has the bolder style of gold case and is hallmarked in Edinburgh for 1963 (date letter 'h'). The dial and case of this watch are both in great condition. Smiths produced the automatic in two types of gold cases, one with thin lugs and the other (this type) with bold, heavier lugs. The automatic movement was the apex of technical development by Smiths,