I dont know if this is in the right section please dont flame me if it isnt.

I am trying to get rid of my spare collapsable tire and the can of compressed air it comes with. I dont know if they are from 1977 but they sure as hell look that way . Tire has not been tested but i guess if someone wanted to buy it i could test it. I saw one of these for a ZX going for about 100 dollars a while back. But if anyone wants it make a reasonable offer and we can work something out.

Again if this is in the wrong section sorry for that feel free to move it or instruct me to the proper section.

Looks like the right section to me. Don't test it with the can as the original cans for a 77-78 are no longer available. You could just air the tire up at a gas station or with a compressor to see if it holds air. I have a collapsable tire in my 78 and the can though I don't use it. The can is still available through Nissan though it's not the original one that they sell. It's actually for a Z31 and has a list price of over 90 bucks.

Here are some pics, not inflated it but looks brand new

I have four of those, and use them for 'rollers' when I take the car into the shop for painting. In the meanwhile, they deflate and take up less space than normal tire-rim sets back in the storage shed...