This auction is for 5 nice, tested vintage Sylvania made 12AX7/A/ECC83 series vacuum tubes. These were purchased from a southern Maryland estate. This is a nice group of five vintage Sylvania made 12AX7/A's with long gray plates, (see pics). To include a Conn and a Magnavox branded Sylvania made examples. The Magnavox is a scarce clear top with side getter and the other four have halo getters. These were tested on a reliable Precision Tube Master 10-12. The values are marked on each tube with 54 being the minimum. To note, the Magnavox clear top is balanced, and the majority are exceptionally strong. I will be listing many other tubes over the next few months. Hopefully these tubes will help you in your restorations and upgrades! Please check my other auctions for nice antiques and collectibles. I am happy to combine shipping to save you $$$! PLEASE CONTACT ME IF YOU HAVE A LOW FEEDBACK COUNT. This is a NO reserve auction, so please bid away! Buyer is to pay within 3 days of the end of this auction. Shipping to the lower 48 states is $5.99. All others pay actual shipping costs, no handling fees. Worldwide buyers, please contact me ahead of time to see if I will ship to your country and the different shipping options and/or costs. I cannot be held accountable for any customs issues! Feel secure that all items will be securely packaged. We have tons of experience! Thanks for your understanding as well as your bid!