A "new" variant - and a question

Hi all,

Here's something you might find interesting, a UK Six-20 Brownie

Junior (Portrait Model) in Spanish, celebrating 25 years of Kodak

Argentina

http://www.toptown.com/nowhere/kypfer/620/620bj_p.htm

Now for the question - this camera is heavily "patinated", so much so

that I had to use quite a degree of digital image enhancement just to

realise that the instuctions printed on the camera were in Spanish!

So, can anyone recommend a proven method of removing this rusty?

patina WITHOUT risking damage to the black paint? Abrasion of any

kind is almost certainly out of the question, the paint is in poor

condition as it is, but I'd like to enhance the detail if I could.

TIA

Chris Eve