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1 X USN-CW-300B TUBE. NEW OLD STOCK IN ORIGINAL ARMY BOX.
BRAND: WESTERN ELECTRIC. 1950s PRODUCTION.
BLACK PLATES, RECTANGULAR GETTER.
SUPER RARE AND UNIQUE TUBE MADE FOR THE US ARMY UNDER THE MANUFACTURE OF WESTERN ELECTRIC.
TESTED IN ROEHRENTEST TUBE TESTER:
100% 62.51mA EMISSION (EM) 5.5mA/V TRANSCONDUCTANCE (GM)
CH77U1
