They all need to be serviced, the 6139 and the rally are not running at all!
The chrono is cool, go for that one first for sure!
All three are well within the capabilities of a competent watchmaker and replacement parts (if needed) can be sourced with some searching.
Start with your favourite and see how it goes, then the others when you can fit them in.
Sell the first 2 to pay for the 3rd
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