It is highly likely that those pistols have gone through at least one complete rebuild, and probably more. As a consequence they amount to "parts guns" so far as collectors are concerned. In particular that means the markings on the slide won't match the original maker, and various parts will not be what they should be in so far as what they were when the pistols were made.
This has nothing to do with "fit for use" is concerned, but they would attract little attention from serious collectors with deep pockets.
As an example in another context, notice that a piece being offered for sale at a "generous price" is often noted to have "matching numbers," that signify complete originality. Those with mixed numbers will seldom attract big bucks.