The study of the iconic Rolex Submariner can be divided and sub-divided into several categories: glossy or matte dials, silver, gold, or white print, crown guards or no crown guards, small crown or big crown, red lettering, date or no date. There is a plethora of characteristics to examine and quantify. The earliest Submariners – the references 6200, 6204, and 6205 – have significant architectural differences when compared even to the generation of Submariner that immediately followed. Yet they are the archetype of a line of watches whose popularity has only grown in the five decades since and therefore have developed a revered place in the hearts and minds of watch collectors and scholars.