U54, PINNACLE BADGED COSSOR/ELECTRONIC TUBES, HIGH WYCOMBE FACTORY, 53KU, CV378, GZ37 BROWN BASE,NEW BOXED

U54, PINNACLE BADGED COSSOR/ELECTRONIC TUBES, HIGH WYCOMBE FACTORY, 53KU, CV378, GZ37  BROWN BASE,NEW BOXED

On offer we have an incredibly scarce device for sale.  It's a Cossor produced U54, showing the characteristic balluster envelope, the parallelogram electrode cage and the swan neck getter plate.   A truly beautiful device with superb aesthetics and more importantly a superb performance.

Device test data: Ia = 120.0mA range, GOOD  A1 82 / A2 83

We test our rectifiers using a calibrated and standardised AVO VCM163 on the specified range.  This VCM gives a qualitative estimation of emission as you can see from the photo, the GOOD range bar runs below the numerical uA/Ig scale with the GOOD range between 51 - 100.  The above device test data, shows the max current range specified and a record of the numerical reading within the GOOD range obtained.