And you know that they are ( the authentic, not the re assembled, fake, and so on ) vey rare.
This is a very subjective topic: Do you really think the Patek 5070, on the second market) with its Lemania movement, is worth twice the value of a Duometre or a Datograph?
Me not.
So you see, all this is very subjective, and depends on everyone's taste, belief, conviction and interest.
Best,
Nicolas