I’m located in the Chicago area and selling a weeklong pass for $150.00 or best offer. Let me know if you’re interested. I can send the packet via priority mail once I receive payment or bring it to you depending on the distance.
Puch was an Austrian bike company that made very decent bikes. I used to work at a bike shop in the 70’s that sold them.
In your case, I’d be more concerned about the condition rather than the age. As someone else mentioned, take it to a shop for a complete check and you should be good to go. There are plenty of older bikes on the ride.