[codefox1]

I assume you are going to stuff it with younger Sardines. Unless pitted from internal or external bothers, should shine up just fine as already suggested. I've used pumice and little oil to do this, but!! goodbye decals and ink stamps if any.

Whatver you do, the result should match the rest of the set's overall impression and appearance to look as "original" as intended. Anything can be done with enough time and money.