Matched Pair Sylvania Number Type 59 #59 Vacuum Tubes Engraved Bases Zenith NOS NIB Tube One (missing centering pin

Tube One (missing centering pin / keyway): Tube Two:

an anode radiator for cooler operation and longer tube life and a banded-cross top mica spacer

This lot of two GE industrial-grade 1852 (6AC7) tubes was tested on our Paul Hart-calibrated TV7/U for shorts

ITEMS ARE GUARANTEED AS-DESCRIBED ON SHIPMENT

Matched Pair Sylvania Number Type 59 #59 Vacuum Tubes Engraved Bases Zenith NOS NIB Tube One (missing centering pinThis beautiful gray and silver matched pair of type Sylvania type 59 tubes was tested our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 73 while Tube Two measured 74 where minimum (65%) is 50. These tubes have mica snubbers for increased stability and lowered microphonics; sheet getters; outstanding flashing; anode radiators for cooler operation and longer tube life; engraved bases and