Dunmire Equipment Company’s Quincy 325-1 s/n:180958L has been in operation since installed new in their Allis-Chalmers later Fiatallis construction machinery dealership’s service department in the 1940’s. The compressor has survived three generations of family business ownership and is in use today. It has received little attention of oil changes and a rare gasket replacement.
In the past the dealership did extensive crawler track work with up to 1″ drive impacts and more recently the compressor has powered an atomizing waste oil heater, sometimes overnight.
As far as anyone still involved in the business knows, it is in it’s original installed location.