Old Pirate
AMG Classic Car Detailing
Hello Ken and welcome to Truth In Detailing. Does it look like this maybe?

If it does and the way it sounds like you may have paint contamination. It could be tiny metallic particles from brakes linings, when it was rail when it was new, fall out or industrial pollution. I would wash the car and then try claying it to see if it will remove it for you. You might need a aggressive clay bar to remove it if a regular one doesn't.
Here is link about this for your review: http://classic-motoring.stores.yahoo.net/claybars1.html

If it does and the way it sounds like you may have paint contamination. It could be tiny metallic particles from brakes linings, when it was rail when it was new, fall out or industrial pollution. I would wash the car and then try claying it to see if it will remove it for you. You might need a aggressive clay bar to remove it if a regular one doesn't.
Here is link about this for your review: http://classic-motoring.stores.yahoo.net/claybars1.html