If you decide to do more than give them a quick polish: Absolutely keep the original scales for those razors. If you trash the scales, you'll regret it later on, once you learn more about what you have there.
It is quite a starter collection...
If you want to have them professionally restored: Click the classifieds button, then click member services to find people who do restorations. From there take a look at the work people do and decide who's work you like. Send some emails to see if the restorer is confident in doing an heirloom restore and retaining all of the original equipment.