How old is this tire?

This tire was the spare for my Dart when I bought it in 1993. Just wondering how old it is, it is a Toyo "E-31" bias ply, size 155-13/6.15-13. the code in the oval is W53379. No I don't plan on running it, just curious. What does one do with such a tire that has never seen a mile? It is too nice to throw away but too old to use. I am thinking about cleaning it up good, and finding a tire display stand and using it for garage decoration.
Thanks
Aaron