Vintage RCA 12AU7A PLATINUM GRADE Clear Top Tubes Matched Pair Test > 100% NOS,Tubes Matched Pair Test > 100% NOS Vintage RCA 12AU7A PLATINUM GRADE Clear Top, Gold Grade within10% and Platinum Plus1%, You are purchasing a "Platinum Grade" matched pair of tubes, Test scores normally average between85 % and90 % of NOS values,Silver Grade tubes are matched within15%.Vintage RCA 12AU7A PLATINUM GRADE Clear Top Tubes Matched Pair Test > 100% NOS.

Vintage RCA 12AU7A PLATINUM GRADE Clear Top Tubes Matched Pair Test > 100% NOS

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Vintage RCA 12AU7A PLATINUM GRADE Clear Top Tubes Matched Pair Test > 100% NOS

Vintage RCA 12AU7A PLATINUM GRADE Clear Top Tubes Matched Pair Test > 100% NOS. Silver Grade tubes are matched within15%, Gold Grade within10% and Platinum Plus1%. You are purchasing a "Platinum Grade" matched pair of tubes. Test scores normally average between85 % and90 % of NOS values.. Seller Notes: “These classic late 1950's thru 1960's RCA tubes have tall gray plates and a large, side mounted "D" shaped getter. They were all made by RCA and many were branded for the keyboard companies such as Conn, Hammond, Wurlitzer, Lowrey, Baldwin etc. . They are all the exact same tubes. Most tubes will have partial logos due to varying degrees of wear on the extremely fragile print.”” , 。

Vintage RCA 12AU7A PLATINUM GRADE Clear Top Tubes Matched Pair Test > 100% NOS

Vintage RCA 12AU7A PLATINUM GRADE Clear Top Tubes Matched Pair Test /> 100/% NOS
Vintage RCA 12AU7A PLATINUM GRADE Clear Top Tubes Matched Pair Test /> 100/% NOS
Vintage RCA 12AU7A PLATINUM GRADE Clear Top Tubes Matched Pair Test /> 100/% NOS

Vintage RCA 12AU7A PLATINUM GRADE Clear Top Tubes Matched Pair Test > 100% NOS

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Vintage RCA 12AU7A PLATINUM GRADE Clear Top Tubes Matched Pair Test > 100% NOS
Gold Grade within10% and Platinum Plus1%, You are purchasing a "Platinum Grade" matched pair of tubes, Test scores normally average between85 % and90 % of NOS values,Silver Grade tubes are matched within15%.