EL84, MULLARD, YELLLOW PRINT, kM1 B5G2, BLACKBURN JULY 1965 PRODUCTION

EL84, MULLARD, YELLLOW PRINT, kM1 B5G2, BLACKBURN JULY 1965 PRODUCTION

Some tungsten deposition in the envelope but tests very strong as can be seen by the test label.  Envelope lettering faded.