...but having considered it I'd have to say the KV Masterpiece 8 Decimal repeater, owned by a fairly well-known Gentleman Purist and friend who I think would like to remain anonymous on this particular matter...
Now if I knew the owner of the unbelievable KV Masterpiece 7 ("The Seven Daughters of Atlas"), that would be even better!
Fun question -- thanks for the post!
Best,
Gary G