Vintage guitars + parts. “Jazz and Archtop Specialist”. This is a lot of 2 1960′s gray plate 12AY7 tubes. New old stock in their boxes. They are tested and matched. International Buyers – Please Note. Bringing you the best in vintage musical instrument restoration parts. We are case restoration experts. Clear crisp pictures that help you make the right decision. If you ever have a problem with your item please contact me within the next 48 hours of receiving it to allow me to work out a solution. We will always work to make sure you have what you need for the success of your project.