NATIONAL Electronics NL-615 7018 Vacuum Tube NOS NIB. Original packaging and inserts. I recommend all vintage tube pins to be cleaned before usage for best performance. Will combine shipping. I will send refund promptly once actual shipping cost is determined. Given the fragile nature of tubes, they will we securely packaged for shipping. Please notify me of any issue or concerns once you receive the items so I can promptly address. Guaranteed not to be dead on arrival. I have been on eBay for over 20 years.