1 X E180F TUBE. 1960s PRODUCTION.

 BRAND: MULLARD. 1960s PRODUCTION. R3B1 DATE CODES.

GREY PLATES, HALO GETTER, GOLD PIN.

TESTED IN ROEHRENTEST TUBE TESTER:

129% 16.828mA EMISSION (EM) 15.93mA EMISSION (EM)

CH168U1