You lost me on this one. Old cars are for hobbyists, same with old saws. Driving an old car/truck every day will nickel and dime you to death, and in the north rust will eventually kill a car good, rubber and plastic breaks down too. People drive way more now and 250,000+ miles on a car in ten years is common. I was driving a 88 Ranger with 300,000 on the clock until 2014 someone cut in front of me, that was that. She was well maintained but rust was killing her, it was old and I never went too far. Old saws are cool, but most will make your hands go numb, and parts are hard to come by, they're for collectors not someone that uses as saw all day. You must not drive much or go very far with those old things, are they rebuilt? Very few things last a lifetime, and to make then is often not worth the cost, you have to know when to move on and not waste time or money.
Nice 700 by the way!