4 X E88C / 8255 SINGLE TRIODE PHILIPS TUBE. NEW OLD STOCK.

BRAND: PHILIPS. 1960s PROD.

SILVER PLATES, HALO GETTER, 3 MICA, SQ: SPECIAL QUALITY, HIGH GAIN.

TESTED IN AMPLITREX AT1000 TUBE TESTER:

156% EMISSION (EM) 142% TRANSCONDUCTANCE (GM) 0.4mA GAS

152% EMISSION (EM) 139% TRANSCONDUCTANCE (GM) 0.8mA GAS

160% EMISSION (EM) 136% TRANSCONDUCTANCE (GM) 1.0mA GAS

164% EMISSION (EM) 139% TRANSCONDUCTANCE (GM) 0.4mA GAS