[lugerholsterrepair]

P. Ristan, What have you tried so far? Have you rubbed it with very fine steel wool and oil? If all the rust is removed you can see what you are dealing with.

If you have done this and it is genuinely pitted there is little you can do outside of welding up the pits and grinding them down again. This is major restoration and cost prohibitive in most cases.
Jerry Burney