Sylvania 5U4 5U4G Vacuum Tube Rectifier Black Plate Shoulder ST Variety Projection Lamp

Sylvania 5U4 5U4G Vacuum Tube Rectifier Black Plate Shoulder ST Variety Projection LampThis Sylvania 5U4G rectifier tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. There were no shorts or gas. It measured 57 58 where minimum (65%) is 40 40 and 100% is 62 62. This tube has 352 C date codes, a bottom, D getter and nice flashing. There are a few glass fragments inside the bottle. Fortunately they are inert and don't affect the tubes's operation. Please see picture. WE HAVE SCORES OF THOUSANDS OF VACUUM

outstanding flashing and a 43-C2 date code

It measured 51/56 where minimum (65%) is 50/50 and 100% is 77/77

new in box milspec RCA 12SG7 JAN-CRC-12SG7 tube tested to spec on our Paul Hart-calibrated TV7/U

dimple getters

This lot of twelve new old stock

This lot of four RCA 50Y6 tubes tested to spec on our Paul Hart-calibrated TV7/U

WE HAVE SCORES OF THOUSANDS OF VINTAGE ELECTRONIC ITEMS

This windup ladies' gold-anodized Acqua (Timex's equivalent of Tudor) watch keeps fairly-good time and has never been serviced to my knowledge

This new old stock-testing matched pair of US-made 1625 / VT-136 output triodes was tested on our Paul Hart-calibrated TV7/U for shorts

excellent flashing and a top

Transconductance measured 49/49 where minimum (65%) is 36/36

double-saucer top getters and copious flashing