Western Electric 216A Third Version "Tennis Ball" Amplifier Tube circa 1923:
Reference page: http://www.bill01a.com/articles/we-216-a.htm
Pics at: www.moonlightsys.com/216A/
Patents:
1-15-7 (two patents), 2-18-08, 10-17-16, 12-17-18, 6-24-19, 12-19-16 1-27-20
Filament continuous, pins straight, with intact wrapper saying "Licensed
for use only as part of the Western Electric loud speaking telephone outfit".
Glass tight with base. Been in collection for many decades. Asking $375.
Buyer specifies carrier (USPS Priority Mail/UPS/FEDEX), pays for
insurance. Good packing assured!
Contact Lin/KJ6EF at [email protected]
Thanks for looking!
73 DE Lin/KJ6EF
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