On the 6th March 1946, Hans Wilsdorf, the co-founder of Rolex some 40 years earlier, launched a new watch that would sell at a modest price than Rolex and yet one that would attain the standards of dependability for which Rolex is famous. The new watch was called Tudor This Prince is a typical Tudor, it has Rolex written all over it (literally and metaphoricaly). The main difference is the movement. This 1980 watch uses the ETA 2784 automatic movement which is given an extra polish. Just about everything else, from the date bubble to the serial number between the lugs, is Rolex.
The Tudor brand is no where near as popular as its big brother, probably because they are not cheap and for the purchaser who is in a position to consider a Tudor, he would likely go the extra few K and get the prestige that comes with a Rolex.