I'm very certain that this is a DW case, based on everything I can see (crystal, handset, dial, bezel... everything).
The movement is most likely NOT gen Tudor. If the seller meant "genuine Valjoux", then that's an odd thing to point out, because there are no Asian V7734 movements. I also don't believe that the pushers or the crown are gen, either. Genuine Tudor Monte Carlo pushers are some of the rarest parts you could look for, and would probably sell for more than you paid for this watch. As for the crown, that's supposed to be a 7mm Twinlock (i.e. a 24-700-0), and it looks too fat to be one. Crown and pushers appear to be DW units, too.
The good news is that it still looks like a really good watch. Also, the caseback looks like it was modded well.