This is a  Quantity SIX (6) Vacuum Tube Lot Sale

Manufacturer: All 6 Vintage Tubes were Made in the USA by RCA Corporation. 

5 were Supplied by RCA to Western Electric and WECO repacked and Supplied to US Army Signal Corp

under contract as stated on the original tan mil-spec boxes packed date 3/1952.

One tube is a 1950 RCA JAN CRC 6SG7 (VT-211) date stamped "0-43" = 17th week 1950. This single tube ships in a new box. The other 5 tubes ship in there original mil-spec tan boxes as shown in pics.

All 6 Tube were TV7D/U tested at RCA Data Sheet Factory NOS or Above Levels for Gm & mA.

Tube/Valve Type:  VT-211 6SG7 Metal Tubes (Vacuum Pentode   RF/IF-Stage   Controlling (mu) )

Condition :  Opened the Boxes and Re-Tested All 6. All 6 Tested at Factory Data Sheet NOS or Above Levels for Gm & mA, 

still Unused NOS/NIB, All 6 are Identical tubes in construction(black metal) and 5 are Date Matched 

in the Original Mil-Spec Tan Boxes are Packed Date 3/1952  for US Army Signal Corp.. One JAN CRC 6SG7 VT-211

 is dated 1950.

We have removed these tubes from there original boxes, cleaned the dust off each 70 year old tube, cleaned the pins

of oxidation and contact cleaned the pins with CDC Quick dry Electrical contact cleaner and tested them. Then placed them box in there respective boxes. All 5 are in Plug-in and Play Condition. 

Out Test set : Recent( 07/24/2023) Dan Nelson Restored, Upgraded and Calibrated TV7D/U with Digital Meter reading

Transconductance(Gm) and Anode Plate Current emissions.

Tube type VT-211 6SG7 'Bogey' (=Factory new from WECO Data Sheet)

 Transconductance( Gm) depends upon Plate Supply Voltage and Screen/Grid#2 Voltage when testing 

(Plate Supply range 100VDC-250VDC, Grid#1: -1 to -2.5V, Grid#2 : 100-150V) = 4,000-4,700 uMhos 

at  mA Plate Current Emissions 8.2-11.8 mA.  Note that ALL Versions of TV7's will test tubes at a maximum of `150VDC Plate Supply Volts and 135VDC Screen/Grid Volts. (Notes: See pics of the data sheet specs for tube type VT-211 6SG7).

For more technical details please read the pics from the data sheets,

WE PACK VERY WELL FOR SAFE SHIPPING WORLDWIDE,

WE SHIP FAST. MANY YEARS EXPERIECE  SHIPPING FRAGILE TUBES AND VINTAGE FRAGILE ELECTRONICS

AND SPEAKER SYSTEMS.

Tube specs: VT-211 6SG7 Metal Tubes

- Vacuum Pentode   RF/IF-Stage   Controlling (mu)

- 

Base	Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uko)
Filament	Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC
Information source	Taschenbuch zum Röhren-Codex 1948/49