(1) Tested Philco Type 41 Tube Date Code 7U Engraved Base Power Pentode Tube

(1) Tested Philco 5Y4G Tube Date Code 08 Philco Engraved Base 5Y4 G Rectifier

(1) Tested Philco Type 41 Tube Date Code 6S Engraved Base Power Pentode 41 Tube

(1) Tested National Union Type 35 Tube Engraved Base Date Code J Tetrode Tube

(1) Tested Philco Type 44 Tube Engraved Base Date Code L3 Pentode Tube

(1) Tested RCA Cunningham Type 41 Tube Engraved Base Date Code J3 Power Pentode

(1) Tested RCA Cunningham Type 41 Tube Engraved Base Date Code J12 Power Pentode

(1) Tested Philco Type 41 Tube Date Code 9U Power Amplifier Pentode Tube