I have a reed prentice model 50. I don't know how old it is, the fuel tank and carb pivot on the rear of the saw for felling. I'm fixing it now, I have spark, but need a piston ring. The rings were froze in the piston, had no compression. We freed one ring and broke the other. I'm searching for a ring that will work.
The oldest one I got is this old red & white Roper-built Sears, and I haven't been able to find it on Acre's site yet. But I'm guessing it only dates from the early-mid sixties or so. Not 50 years old yet, but in nice shape for it's age.
I have a !952 IEL Pionier model DA the bar and oil case rotate 360 degrees for falling trees. This was brcause the carbs were float instead of diaphrams. Chain speed is slow but lots of power I sure am glad I dont have to cut all day for aliving at its plus 35 pounds. She purrs like a kitten but doesnt get used much.