This item is working surplus. It was tested in our facility and is fully functional. The unit was powered on and run until base pressure was attained and pumped down to 0 mTorr with 101,044 hours of run time. Ideal for rebuild based on run time hours. The part number was accidentally removed when being cleaned. There are some scuffs and discoloration to the body (see photos). The physical condition is good, but there are signs of previous use and handling.