The Rolex Submariner No Date was the original version of this now-legendary diving watch. It debuted in 1954 under the reference number 6204 and quickly came to define the entire genre of tool watches for divers. For the first ten years of its existence, Rolex exclusively offered the Submariner without a date display. Very little has changed about this watch over the decades, and it remains an integral part of the Swiss luxury watch manufacturer's catalog to this day.

Unlike its sister model with a date display – a.k.a. the Submariner Date – the Submariner No Date is only available in a stainless steel case. In addition, its dial and bezel are always black in color. Advertised as the "diver's friend" at its release, the Rolex Submariner No Date is, of course, water-resistant. The earliest models are water-resistant to 100 m (10 bar, 328 ft), though Rolex quickly increased this to 200 m (20 bar, 656 ft). The Submariner has had an improved depth rating of 300 m (30 bar, 984 ft) since 1979.

Rolex has always been very careful whenever they've decided to make slight alterations to the Submariner No Date – so much so that current models bear a strong resemblance to the originals from over 60 years ago. Defining features include a classic dial with dot indices, as well as "Mercedes" hands. The biggest changes came in 2010 with the introduction of the maxi case and a ceramic bezel inlay. However, the case diameter of 40 mm remained the same.

Like most stainless steel Rolex Submariners, No Date models have significantly appreciated in value in recent years. One extreme example is the original 5513 worn by Roger Moore as James Bond in 1973's "Live and Let Die." Back in 2001, the watch sold at a Christie's auction for around 25,850 GBP (approximately 38,000 USD at the time). Fourteen years later, the same exact timepiece appeared in a Phillips auction, where it ended up landing 363,000 USD when all was said and done. While the average No Date is unlikely to experience a similar jump in price, chances are still high that it will perform well financially for years to come.