FS: six matching RCA 6L6GC black plate "64-17"

[Rodeodave]

I have six matching RCA 6L6GC with the same date code "64-17" for sale. They have the nice black plates and a single shiny side getter. PM me if you want more pictures.
The tubes were pulled from a Lambda power supply and I tested them with an Eico 666 tube tester. I modified the Eico 666 so that I can directly measure the plate current. The first number of the tested values is the % of dynamic conductance and the second value is the AC current through the tube. The tube obviously only conducts at the positive half-cycle of the anode voltage, which means that there is a factor of about .6 to get the real current, but that's just scaling.

Here are the values:

1) 105/65.7
2) 104/65.0
3) 106/66.2
4) 105/65.8
5) 105/65.5
6) 105/65.7

I'm guessing these initially were a matched sextet and it seems like they still are.

I used the 6L6 settings from the 667 Master Setting Chart. These settings are identical to the Coletronics Chart. The settings are:

6L6 6.3 55 95 61435 62111 4 1 3-4-5-(8) 3

The tubes also checked negative for gas and leakage (>20M Ohm). In case you wonder, here's how you test for gas with an Eico 666 (should work for 667 as well): With the unit fully set up to test the tube, the grid voltage is set to 0V. Then the tube is tested, and while holding down the merit lever, the grid lever is switched to NC (from position 5 to 6). With a gassy tube the reading will go up, otherwise it drops (which it luckily did).

Make me an offer.
Payment via paypal or regular bank account in Austria, Europe. That's also where they'll be shipped from, with insurance and securely packed.

[Rodeodave]

Hi,

I have two more RCA 6L6GC that I'd throw in with the tubes above, for a total of 300$ plus shipping. One is a tall bottle 6L6GC with date code "60-35" and two bottom getters. The other one is a 6L6GC with date code "66-04" and side getter.

Shipping is 20$ btw.