MATCHED PAIR OF OSRAM GREY GLASS 6J5G, FROM 1943 SAME HAMMERSMITH FACTORY CODE
On offer today, m we have a pair of the legendary Osram grey glass L63. What is special about these is not only do they match EXACTLY in terms of both anode current and mutual conductance, but they are also from the same factory code batch as shown by the markings in the etched Osram cartouche. Both devices carry the broad arrow and the Z notation showing that they were produced for the military at the Marconi-Osram Hammersmith factory Very scarce today to find a pair of vintage L63/6J5 from 1943 especially with superb emission.
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