Hmmm.....interesting comparison.
I think i will choose 5196 PT, definitely platinum would be the first choice. Patek 5565 SS is a very exclusive piece, but let us think about the breguet numeral 570 sitting inside PP's museum.
If there is two of the same watch on auction 570 SS / 570 PT with the same case condition, breguet numerals with a two tone dial....which would you choose ??
Which would you think can fetch a higher hammer price at the end ???