This auction is for a nice group of 6 tested vintage 1950's RCA 5963/12AU7/ECC82 series vacuum tubes. These were purchased from a retired industrial engineer from Southern New Jersey. This is a good honest group of six vintage RCA 5963's (ruggedized) with long black plates and angled squared getters, (see pics). They were tested on a reliable Precision Tube Master 10-12. The values are marked on each tube. To note, two are perfectly balanced, and the others are very close. 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!