AMPEREX HOLLAND 12AX7
2 available Amperex Holland,short ribbed plates
GE 12AX7/,long ribbed grey plates
4 available,GE 12AX7/,long ribbed grey plates,halo getter
MULLARD 12AX7/12AX7A
none available MULLARD "LONG RIBBED PLATES
1 available ,Mullard short ribbed grey plates 1960s
PHILLIPS CANADA 12AX7
2 available ,Phillips short grey plates 1960s
RCA 12AX7/7025A
3 available,RCA short ribbed plates 1960s-1970s
2 availble,RCA Long black plates slanted D getter 1950s
RFT Germany
SYLVANIA 12AX7/12AX7A
none available Sylvania ,long black plates
2 available Sylvania ,long grey plates,halo getter
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