patekova
1861
I will always gladly pay a premium for a watch with the Certificate
not so much because of value or resale issues, simply because as a collector having a "complete" watch is far more satisfying to me.
But I should add, that more important is the condition of the watch. I would rather have a perfect watch with the Extract than a a noticeably lesser condition watch with the Certificate.
I would add one more qualifier. If a watch is supposed to have 2 backs I would prefer all other factors equal, a watch with both backs and an Extract than one missing a back but having the Certificate.
Best, patekova