Sylvania tube date. The 312 EIA code indicates that this tube was made bySylvania for Delco. Shipping to the continental U. The left hand group represents the production month, the right represents the year. Attention tube audio enthusiasts and vintage radio restorers! This is a fantastic lot of 10 Sylvania 7586 JAN Nuvistor vacuum tubes, all New Old Stock (NOS) with 1981 date codes. Mutual conductance readings below. 1 pair) 5749W=6BA6 Philips JAN by Sylvania NOS 1980's 1 tube) 10. 00 + $7. That facility played a major role in the economics of the area to the end of production. (1) Tested Sylvania 3CF6 Tube. Both are green logo in block letters. The tube number has been worn off of the glass. Tested on a calibrated Hickok TV-10 military tube tester with no shorts and no leaks with the following resul 5 days ago · (1) Tested Delco 12V6GT Tube. Date Code ND. Date Code 613. 3ma Gm=4100. Tube 1: 2800. Among the EIA codes that you will find on Sylvania-manufactured tubes are 312 and 722. 4 days ago · (1) Tested Sylvania Export 12ED5 Tube with Original Box. The former is a short gray ladder plate, latter is long gray ladder plate. The second half of each decade is denoted by a bar under the letter S of SYLVANIA. (1) Tested Sylvania 6K6GT Tube. Mar 1, 2026 · NOS / NIB Date matched pair of three Sylvania 6SH7 vacuum tubes. View complete property records such as current owners, tax assessment history, & transactions for 606 Waynesboro Hwy Sylvania GA 30467. Sylvania was probably the most prolific American tube manufacturer, and their tubes were found packaged by many well-known USA name brands. Jan 2, 2024 · The Sylvania tubes made during WWII, they have a 3 character date code on the top under the model number and one can determine the week and year in which the tube was made. only. Tube date codes ? If you are trying to date code the tubes shown, one shows the EIA Code of 312 (Sylvania) and the date code 5437 (37th week of 1954). Date Code RAA. 5 days ago · (1) Tested Sylvania 5AZ4 Tube with Original Box. Original date matched boxes are included. 4ma Gm=4400 1 tube) 10. We prefer the versatility and precision of Hickok TV-10 military testers and use them almost exclusively except in rare instances when pinout/socket compatibility is not possible. The article provides examples of Sylvania-manufactured tubes. Tube's values were recorded at "95/95". Mar 21, 2009 · DATE CODE ON SYLVANIA TUBE I have a sylvania 6189w tube,the numbers from top to bottom are 6727,does anyone know when this was made? THANKS Jan 13, 2023 · I acquired a big lot of Sylvania 12AU7 A8V tubes with date codes 57 05 22 and 68 12 42. Sylvania Date Codes – Fluorescent 1950s-70s The code runs on a ten year cycle and consists of a two groups of dots. Date Code RAE. Wonderful sounding tubes made in the USA. 00 delivery 1 day ago · Up for bid is (1) vintage 6AS7-GA vacuum tube. Sylvania 6V6GTA Vacuum Tube Long Bottle Chrome Top Amplitrex NOS 96% Gm $15. S. I have Googled and come up empty on these particular tubes. Tested on a Dyna Jet Model 606 with a good range of 65-120. Sylvania built a state of the art tube manufacturing plant in Altoona, PA in 1958.