(!!!) (BEST PAIR) 6GH8A GE by EI Yugoslavia NOS copper grid posts 1970's (14.2/13.5ma and 16.4/15.2ma) (High Gm all 4 sections)
(!!!) (BEST VALUE PAIR) 12AX7=ECC83 EI Yugoslavia Smooth Plate (Telefunken clones) 1970's 1-3% matched (1.4/1.4ma and 1.5/1.3ma) (Closely matched) (phono-grade, preamp)
(!!!) (BEST VALUE PAIR) 12AX7=ECC83 EI Yugoslavia Smooth Plate Telefunken clones 1979 1-3% matched (1.2/1.3ma and 1.4/1.3ma) (Closely matched)
(!!!) (BEST VALUE) EM84=6FG6 Ei Yugoslavia NOS 1970's (10 in stock) (bright eyes)
(!!!) (BEST VALUE) EM84=6FG6 Sylvania India NOS 1970's (2 in stock) (bright eyes)
(!!) (BEST VALUE) EM84=6FG6 Ei Yugoslavia branded RCA Mexico NOS 1970's (3 in stock) (bright eyes)
(!!) (Good Value Single) 6DJ8 EI YUGO branded Siemens NOS 1979 (16.2/17.2ma)
(!!) (Recommended Pair) 6GH8A GE by EI Yugoslavia NOS copper grid posts 1970's (13.6/13.5ma and 13.4/13.0ma)
(!!) 6DJ8 EI YUGO used/good 1977 branded RCA 1984 (13.4/15.6ma)
(!!) EF80=6BX6 RTC by EI Yugoslavia NOS 1976 (14ma)
(!) (~ Best Value Single ~) 6DJ8 EI YUGO NOS 1977 (13.2/13.6ma)
6021 probably made by EI Yugoslavia NOS 1970's - 1980's (1 pair)