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

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

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

(1) Tested RCA DeForest 802 Tube Engraved Base Type 802 Tube Power Pentode

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

(1) Tested Philco Type 24A Tube Engraved Base Date Code U6 24 A Tube Tetrode

(1) Tested Raytheon Type 33 Tube Date Code L8 Power Pentode Vacuum Tube

(1) Tested Philco 7B5 Tube Date Code 0-0 Philco Loktal Loctal Power Pentode