Production Year: October 1957. PERFECTLY MATCHED SET. Matched Codes: AE 743. I mark every tube in order to avoid tube rolling! ULTRA RARE HI FIDELITY VALVE. 2 HOLE BLACK LADDERS. Tall Black Base. BEST TUBES ON THE MARKET. NO LEAKS. NO SHORTS.
SELECTRON 5AR4 GZ34 FULL WAVE RECTIFIER - TEST NEW - ORIGINAL BOXE - TEST 88-90/54 ON PRECISION 10-20 - MADE IN JAPAN