You wont be able to do a whole lot about the fadeing, it proves the vintage anyway !!
I just read the entire 1957/58 catalogue and alot of time and expertise went into those drums back then. They shaved and made their own heads, made the cymbals in factory, heavily chromed everything in factory, hand formed the shells before the ovens and so much more. Lots of options were availible on request.
Your bass has six lugs per side and four spirs..correct ?
Is it the teardrop kind or the long rod type ?
If you want to learn about them,...on the sonor museum site, the entire cat. is avialible.
Do you have the wood calf rings or the metal chromed ones ?