Those were great combines
My great grandad had an grain elevator and sold them to farmers and took grain for payment
They are still the best machine for small seed crops
A guy I know hobby farms small lots in a small town in KS he uses all vintage AC equipment the guys at the Eli after say the soybeans look like seed beans they are so clean out of the Ac pull type.
There is a self propelled version on an old farmstead near here. Wasn’t that old when the farmer suddenly died
His wife moved Bach home to Missouri and never bothered with a sale just left it all