Part Number: 12S-K614M4C1A (Pressure switch) Part Number: 12SK7 (Ne) Part Number: 12SK74 (Electron tube) Part Number: 12SK7GT (No description) Part Number: 12SK7GTG (Ne) Part Number: 12SK7GTY (No description) Part Number: 12SK7-JAN (Tube) Part Number: 12SK7M (Ne) Part Number: 12SK7MET (Ne) Part Number: 12SK7Y (Electron tube) Part Number: 12SK7YJAN (Ge) Part Number: 12SL-14-1BE (Stud) Part Number: 12SL1U (Ne) Part Number: 12SL1U1 (No description)