KT61, OSRAM, MATCHED PAIR, BROWN BASE, FROM 1954-1955
On offer today we have these beautiful Osram/GEC devices. They test showing good emission as you can see from the attached test data label courtesy of our AVO VCM163. The envelopes both carry the white inked cartouche and the brown micanol bases are tight to the envelopes with clean uncorroded pins.
