NOS GEC Osram Marconi A1834 – 6AS7G Gold Grid Black Plate Power Tube. The minimum value is 35 / 35. The average new tube tests at 56/56. Test results are 68/68. There is no gas, no shorts, and life test was good. This is from a collection which I have been holding onto for decades. Read More
GEC A1834 6AS7G Power Tube Gold Grid Black Plate TV7 Tests At 68/68 New
