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34,900 Posts
Hi and welcome, my 2 pence 
IMO there is a major difference between wabbie/patina and black rotted old lume gunge on dials and hands, if a nicely aged patina then i would leave as is but if they have turned to rot then i would have them professionally relumed by one of the pro's, James, Jack etc.
Crystals either polish or first choice change, especially if you have a OEM crystal available.
Cases (these two models) i personally would leave as is unless they were in a terrible state but if just gentle wear then i would leave original.
Obviously change all gaskets.
Personally i wouldent dream of fitting after market dials and saving the originals for "later".
Have fun and at the end of the day do what you feel is best, your watches
IMO there is a major difference between wabbie/patina and black rotted old lume gunge on dials and hands, if a nicely aged patina then i would leave as is but if they have turned to rot then i would have them professionally relumed by one of the pro's, James, Jack etc.
Crystals either polish or first choice change, especially if you have a OEM crystal available.
Cases (these two models) i personally would leave as is unless they were in a terrible state but if just gentle wear then i would leave original.
Obviously change all gaskets.
Personally i wouldent dream of fitting after market dials and saving the originals for "later".
Have fun and at the end of the day do what you feel is best, your watches