I bought 2 Amiga 500 from Germany on eBay and got them just 15 min ago. Both of them are in rough shape. I am going to restore them to their former glory.
I did not test them yet. I'll keep you posted on the progress.
Seems the paint on "German Flag" Amiga is permanent, I tried to wash one of the keys with dish soup and also tried isopropyl alcohol, but no change! Any suggestion?