(1) Tested Strong RCA 25L6GT Tube Date Code LZ RCA 25L6 GT Beam Power Tube

(1) Tested Strong Tung-Sol 25L6GT Tube Date Code PM3 Tung Sol 25L6 GT Tube

(1) Tested Raytheon 25L6GT Tube Date Code 8-30 Raytheon 25L6 GT Beam Power Tube

(1) Tested Strong GE 25L6GT Tube Red Letters Base Date Code 59-26 25L6 GT Tube

(1) Tested Very Strong CBS 25L6GT Tube Date Code 60-17 25L6 GT Beam Power Tube

(1) Tested RCA JAN 25L6GT Tube VT-201-C Date Code K6E 25L6 GT Beam Power Tube

(1) Tested Tung-Sol 25L6GT Tube with Box Date Code 602-3 Tung Sol 25L6 GT Tube

(1) Tested RCA 25L6GT/G Tube Date Code S3 RCA 25L6 GT G Beam Power Tube