Two NEW National Union type 45 tubes

Made by Sylvania, National Union branded

Tubes test 2125 and 2250 where 1430 micromhos = pass/fail grade

Identical construction

Foil getters

Hanging filaments

Black plates

Matched L1M date code on glass =

L = December / 1 = 1951

Matched 5213 date stamp on base

Original boxes included

NO SHORTS / NO GAS

Tubes are close mA plate current matched to within 1.2% difference

FULL TEST RESULTS :

-Tube #1= 2125 micromhos and 34.5 mA plate current

-Tube #2= 2250 micromhos and 34.1 mA plate current

% Test results in percent %

96.5% / 102.2% Gm mutual conductance

101.4% / 100.2% mA plate current

For reference:

Tubes Tested on Westmore 501 (Triplett 3444) tube analyzer

For reference:

Type 45 tubes: Spec(100%) = 2200 micromhos and 34 mA plate current

Type 45 tubes: 1430 micromhos and 22.1 mA = pass/fail grade

* I take photos with camera flash and also no camera flash to show all detail

USA = usps priority

International = UPS or FedEx 7-10 day delivery signature depending on your location