There are grail and then there are GRAIL watches.
I hope everything checks out for you, you must be very well connected. Strange that someone who bid on this piece bailed because it would be a certain buyer taking this thing high in the bidding due to its rarity.
As already requested please keep us updated with the purchase story and any sympathetic cleaning/servicing work you decide to get done.
Do you have a rough idea how many are left in the world in original build state?
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