1 X ECC88 / 6DJ8 TUBE. USED.
BRAND: AMPEREX BUGLE BOY. 1950s PHILIPS PRODUCTION. ◿9H CODES.
GREY PLATES, D-GETTER.
TESTED IN ROEHRENTEST TUBE TESTER:
81/85% 12.126/12.786mA EMISSION (EM)
CH168U1