Rolex Oyster Perpetual Submariner

The Rolex Oyster Perpetual Submariner is a line of watches manufactured by Rolex, designed for diving and known for their resistance to water. The first Submariner was introduced to the public in 1954 at the Swiss Watch Fair. Copied by other watch makers, the Rolex Submariner is widely recognized as a classic among wristwatches manufactured by one of the most widely recognized luxury brands in the world. The Rolex Submariner is part of Rolex's Oyster Perpetual line.
The Submariner model went into production in 1953, and was showcased at the Basel watch fair in 1954. The assigned case reference number of this first Submariner was either 6204 or 6205. It is unclear which model came first and, in any event, the two watches are nearly identical.
Neither has the distinctive "cathedral" or "Mercedes" hands now so strongly associated with the Submariner line. Rather, both of these early submariners have straight "pencil" style hands. Few if any of the 6205 watches bear the name "Submariner" on the dial, a major distinction with modern Submariners. Some 6204 models have the Submariner logo printed below the center pinion, while others have the logo blacked out. It is believed that there were unexpected trademark issues connected with the name "Submariner" at the time the 6204 and 6205 were released which account for the inconsistent use of the Submariner mark on these early Submariners. Trademark irregularities notwithstanding, both the 6204 and 6205 are designated Submariner models in the Rolex product literature of the time.
In 1954, Rolex also produced a small number of ref. 6200 Submariners. This was the first Submariner (although not the first Rolex) to make use of the Mercedes hand set (a feature of all subsequent Submariners). The 6200 also featured an oversized winding crown (compared with the 6204 and 6205 models). Within a few years, Rolex revised its Submariner line, producing the 6536 (small crown) and 6538 (oversized crown) models. These watches had "improved" movements (the cal. 1030), including a chronometer version in some 6536 models (designated 6536/1), the now-familiar Mercedes hands, along with the Submariner logo and depth rating printed on the dial.
By the early 1960s, these models gave way to the 5508 (small crown) and 5510 (large crown) models. All of these early Submariners used either gilt (6200, 6204, 6205) or gilt/silver gilt (6536, 6538) printing on glossy black dials. Radium paint was used for the luminous indices.
The next wave of Submariners, the 5512 (chronometer version) and 5513 (non-chronometer) marked a significant change in the appearance of the popular Rolex design. "Shoulders" were added to the crown side of the case to provide protection for the winding/setting mechanism. In early watches—perhaps until 1964 or so—these shoulders were pyramid-shaped, ending in points. Later watches were manufactured with rounded shoulders. In addition, the 5512 and 5513 were both fitted with the oversized crown, which became a standard feature of the Submariner line thereafter. Sometime in the early 1960s, Rolex discontinued the use of radium paint for the luminous indices, switching to the safer Tritium-infused paint.
In 1965-1966, Rolex discontinued use of gilt/silver gilt dials on the Submariner watches, switching to white printing. A final important change came with the introduction of the 1680 model in the late 1960s. The 1680 was the first Submariner to be equipped with a date complication, marking the completion of the transition of the Submariner line from specialist tool watch to mass market fashion accessory. While many professional and military divers used — and continue to use — Submariners in the most demanding underwater environments, by the late '60s the watch had undeniably become a mass market product as well.