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

(1) Tested Tung-Sol Type 24 Tube Engraved Base Date Code 7-3 Tetrode Tube

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

(1) Tested Philco Type 33 Tube Engraved Base Date Code PB Power Pentode Tube

(1) Tested Philco 7H7 Tube Date Code 6O Loctal Tube Loktal Pentode Tube

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