How do I preserve a can collection?

I am a collector of canned coffee beverages. The cans are empty (to clarify, they are not the cans of coffee grounds such as Maxwell house, but tin and aluminum cans like sodas).
I am afraid that after some time the artwork on the cans will deteriorate, what is a good way to prevent this? (or will it deteriorate in my lifetime?)

Hi!! if you are unsure of the lasting qualities of the artwork paint the exterior with a light coating of clear varnish.
Then ensure storage is dry, and not likely to be knocked about.
Sounds like a good thing to collect, different.