vintage and Rare Citizen Mate12 Mainframe Desktop Computer w TK-M501C Keyboard Serial number on keyboard is 0080946 Mother Board Serial OWS602036115 Mainframe serial 1150000447KE No Power Cord, Mouse or Monitor Sold Untested For Parts or Restoration Only I believe the Processor Family is Intel 80286 - Processor Speed 12.5 MHz - System Memory 1 MB - Storage Capacity 32 MB Interior Appears Intact There are a few of the rear cabinet screws missing Mfg. 1988 to 1990 Very Heavy Mainframe measures approx. 17.5W x 17D x 6.5H Asking $499 or BO