I have for sale the following ECC83/12AX7-type tubes:
I have for sale two pair of Valvo ECC83/12AX7 tubes with 45º, decline O-getters.
Date codes and tests are as follows (bought and tested from an extremely reliable friend/dealer from The Netherlands):
Tested on a Funke W19, where 1.9 = “good”; date codes read:
I60 DOA & I60 DOH
3.1/3.2 & 3.1/3.1
Asking $100
Tested on an AVO MK IV, where 1.20 – 1.60 = 100%/”as new”; date codes are from the same batch: I60 DOD & I60 DOD
1.30/1.80 & 1.30/1.70
1.20/1.70 & 1.20/1.70
Asking $120
Also for sale are a pair of Tungsram Austria ECC83/12AX7 tubes with white type and double-support O-getters. Date codes and test is as follows:
Tested on a Hickok TV-7, where 32=min./49=”as new”; date codes are from the same batch: IB2 ≠20
55/52 & 52/52
Asking $90 ***SOLD***
I did quite a bit of research, and wondered if these couldn’t be an even rarer Munich Siemens & Halske pair, due to the symbol in the second row of codes. However, I’m not certain I can substantiate that since they have the double-support getters and Siemens seemed to have single-only. I tested for noise in a couple of preamps and they sounded absolutely great; no noise.
Lastly, I have an anomaly...A Mullard “Old Shield Logo” O-getter tube labeled ECC803S that tested “as new” on a Hickok TV-7 when I bought it over a year ago with some other Mullards and Telefunkens. This is a rarity, since I assume Siemens and Telefunken were the only ones to produce the ECC803 variety. However, I found three sites that confirmed Mullard did make these for various labels.
Asking $100
I have personally never used any of these since I got them, only to test in a couple of preamps for noise, and each are dead-quiet and awesome sounding tubes.
Please feel free to e-mail with questions, or are serious about buying. Always glad to talk and help when I can. I have perfect feedback on AudioGon under JSawyer09, and sell tubes often there and elsewhere. Cheers.
