This compressor appears to be based on the Fairbanks Morse "Jack of all Trades" engine castings. Any information regarding this item such as years of manufacture, rarity, catalog listings, etc. would be much appreciated. IF this was put together in the Fairbanks factory and the serial number was assigned as if it were an engine it could be as early as 1898. Contact me at the address below with any comments or information. Thanks, Larry.