Obviously, not. And I am not going to tell him either. But I am also not going to spend $25k when I can convert a generic V72 for 1/10th of that & the result would look & function the same as the movement in the auction. But for that rare wealthy collector with an empty gen 62xx case, it might be a good deal (as long as the movement in the auction is not a conversion itself). The seller does have a (limited) history with high end Rolexes & similar watches, so it is probably legit. But, knowing what I know, I would be crazy to bid on a bare movement like this without having it appraised by a knowledgeable 3rd party.
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On 2nd thought -- How could a gen 72B have possibly lost its case & ended up going to auction by itself????????? I agree with Iceberg, something smells VERY fishy.
If the movement was shot, damaged, rusted, etc., so badly that the gen owner was forced to replace it (which would have had to been done quite some time ago, since these movements have not been made for many years), then this auction might make sense. But having a bare 72B in near pristine condition (and knowing what we know about conversions, DWs, etc.), this story just does not hold water. I think this is probably a conversion like some of us have in our DWs & this guy is using the 'I Will Buy Your Case' rouse to give his story some credibility. Poppycock.