Why are you against the easiest option: a very high definition scan of it and some cleaning of the obvious scratches in photoshop?
As they are silkscreened they scan pretty well (no moiré pattern effect).
Even better, if you don't mind the scratches, just go to a copy shop and make a color copy of your card.
Actually make two and use them both so that you'll have 2 cards with the colors perfectly matching (as well as the scratches of course

).
If you can provide the high def scan, I'd be happy to clean up the file for you if you want to.