There should be date codes and paint markings to show age plus the tire should have a date code.
The PO never had the safety valve installed so do not inflate the tire. Several people were killed while inflating them with air hose or air tank instead of the bottle. They would explode and with bad results. There was a special valve they put in place of the one like in this one that would pop off. They also had a yellow warning label on the rim that is missing. These did some in other models so you need to look at the codes to verify. I do not have them but you can google and find them.
Here are some pics of a later model one and I have my original in my 73 Mach 1.
I sold a GM one I had on ebay and got screwed on shipping due to ebay calculations being wrong. Cost $25.00 that UPS back charged me. It only sold for $150 but not many people looking for them like the Mustang. They are difficult to find with right date codes.
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