Can a piece of painted, sheet-metal be made to look (indistinguishable from) a piece of metal..?

that has been under the ground for 65 years?Can a piece of painted, sheet-metal be made to look (indistinguishable from) a piece of metal..?
Check out the range of paint effects products that Deco-Art makes. You might need to use a 'rust' product, or make your own using vinegar soak if the metal is iron, but there are many different finishes you can get using D-A. And rubbing down after each layer of paint will help.