Tudor is to Rolex as Buick is to Cadillac.
In the old days, the brands shared many of the same exterior components - cases and the like - and, rarely, movements. However, the vast majority of Tudors use ETA movements, not Rolex movements.
Lastly, do not buy a watch with a dial that says "Rolex Tudor" or a Tudor that has been redailed to say "Rolex."
I could go on, but I hope this answers your question
In the old days, the brands shared many of the same exterior components - cases and the like - and, rarely, movements. However, the vast majority of Tudors use ETA movements, not Rolex movements.
Lastly, do not buy a watch with a dial that says "Rolex Tudor" or a Tudor that has been redailed to say "Rolex."
I could go on, but I hope this answers your question
