FULL SLEEVE (5) NOS NIB National 6AU6A Radio VACUUM TUBES Tested E.9474
Model 6AU6A. National Label made in USA, Likely SOVTEK. Results: All 100% or better. Date Code —. Common Use —. Tube Type —.
Model 6AU6A. National Label made in USA, Likely SOVTEK. Results: All 100% or better. Date Code —. Common Use —. Tube Type —.
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