This M&W Systems 052-50-5514 Tecumseh Compressor is in unused condition and is guaranteed to be fully functional. This compressor came from a large pharmaceutical company that had surplus new old stock inventory. We urge customers to view all photos as they show overall condition, included accessories and useful information. As seen in photo #2, the original Tecumseh label was partially removed. As a result we cannot quantify the compressor model. We will be happy to provide additional information as well as photos so please feel free to contact us with any questions.