Tudor Oysterdate Cronograph Ref. 79280In the late 1990s to early 2000s, the Tudor Oysterdate Chronograph Ref. 79280 sits in one of the most interesting transitional phases of modern chronograph production. This is the so called slim block generation, a period where Tudors manufacturing was still deeply interwoven with Rolex industrial supply chains, well before full separation of component sourcing. The result is a watch that, in execution, feels far closer to a Rolex tool chronograph