Philips even sourced their EL34 valves from RFT when they had stopped production themselves. They can be, amongst others, recognised by the lack of the small stamped factory codes but were marked Philips (not sure whether also mentioned Made in Holland, have to look one up).
Quote:
Originally Posted by ITAM805
Thanks Frank, so there we have it!
Who what where were they though?
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The ECH84 on r-type looks like it was a bulk Philips valve (factory codes present, simple stamp without brand name - stamp may have even been applied by Solus).