Tudor is owned and made by Rolex and uses a lot of the identical or similar parts, excluding the movement. Tudor generally uses ETA supplied movements while Rolex uses Rolex in-house designed and built ones. For the past couple of decades Tudor has not been marketed or distributed in US market due to possible brand dillution concerns Rolex appears to have. Recently, Tudor designs have been moving away from looking like Rolex clones for the same reason. Elsewhere in the world, Tudor is still promoted and sold alongside Rolex as a less expensive alternative. So succinctly put. This also means that the vintage Tudors are priced correspondingly lower. A 'very near' Rolex can be had for less money. It will have the famous 'Oyster' case, the Rolex coronet on the bracelet and winding crown and will be serviced by Rolex to their high same-as-factory standard.