One, new in box, Sonotron 201A, #01A globe balloon, UX-201A, CX-301A equiv

Description

One, new in box, Sonotron 201A tube, #01A with the globe/balloon shaped glass envelope. Excellent silvering, firm base. The box is crisp and in impeccable condition.  It has all internal flaps and cushions- all are attached. There is one bit of pencil handwriting indicating the date purchased.  That date is consistent with the date printed on the store label- which is also impeccable. This are of course an electrical equivalent to the UX-201A/UX201A, CX-301A/CX301A, 01A, and 101A tube. Tested on a Hickok TV-3 military tester that has been calibrated. Tube tests at 900 where pass/fail is 470 micromho.
Many other lots of tubes for sale this week.