Thread: An old valve
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Old 6th Dec 2017, 10:49 am   #5
jjl
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Join Date: Jan 2003
Location: Ware, Herts. UK.
Posts: 1,082
Default Re: An old valve
Quote:
Originally Posted by PJL View Post
It says:

Royal
Ediswan
AR
It's one of these then

http://www.r-type.org/exhib/aaj0061.htm

a nice find, even if the filament is o/c.

John
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