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Old 31st Aug 2019, 9:37 am   #21
paulsherwin
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Default Re: Valve Items - Philips/Mullard Rimlock-to-Noval Transition

http://www.r-type.org/exhib/abc0004.htm

That is mid period production. The early ones had a metal skirt on the base like Loctals and the last ones looked like B9A Novals but with a locating pip on the side. Mazda produced some with a central metal spigot on the metal skirt: https://commons.wikimedia.org/wiki/F...da_Rimlock.JPG

They were largely restricted to the UK and Europe, but were the dominant standard there in the first half of the 50s.
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