Tiffany dial Pateks are stamped at Henri Stern NYC. No minute repeaters bear the stamp (might have extremely rare exemption). Some models especially SS Nautiluses such as 5711/1A, 5712/1A, 5167A and discontinued 5980/1A are extremely desirable. Their value is at least 10-20% higher than their non Tiffany dial counterparts. 5711/1A might be 40% higher or more. Tiffany dial Pateks are for a collectors' market. Not everyone wanted to pay premium for them especially Americans. They are very sought after in Japan and Italy.
I am personally a big fan of Tiffany dial Pateks. I believe later Tiffany Pateks especially SS Nautilus will perform like Tiffany dial Rolex sports models in the market. And I personally do enjoy the stamp.