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> Matched pair rca 6197 tubes nos 6CL6
Matched pair rca 6197 tubes nos 6CL6
Matched Pair RCA 6197 Tubes NOS 6CL6
My tube tester is a SECO 107A Dynamic Mutual Conductance Tester. Good is at 60, but all tubes listed as NOS or NIB will have tested over 100, have no shorts, leaks or gas.