Trade: NOS vintage tire

I recently picked up a fuchs spare clad with a (zero mile) Dunlop SP 57 185 70 15 tire...still has 100% tread and all the little "nubs". It was actually mounted with an inner tube! The wheel was never mounted and dated 3/72. As the wheel was never mounted, I am going to assume that the tire is as old as the fuch. To be clear, I am keeping the fuch, but have no need for the tire.
I am not a tire expert, and I don't know what to look for on the tire that would represent a code to determine it's actual age. Tire looks great as it never saw asphalt or the sun :rolleyes:
If you can use this let me know, and we'll figure out something silly to trade.

Ok, ok, ok...means nothing without pics. Forthcoming. :rolleyes:

Here you go...nubs, tube and all.

This needs to go to someone in the Denver/Front Range area, as I am not interested in shipping it. If you can use this, send me a PM and we'll figure out the transfer.

Will trade tire for beer, but you have to help me drink it.

Easy to ship, can send USPS, no box just wrap in plastic film

I'm actually glad he won't ship it. The old tire geek side of me (1st career was tires, 1975-98) thinks I want it. The practical side knows I have no real need...

Oh, he will be happy to ship. No packaging required. I'll just slap an address and and postage and away it goes. Who needs a period correct spare?