(microphonic tube) JRP-5687 Raytheon NOS black plates D getter NOS 1956 (36/41ma)

1 microphonic tube) JRP-5687 Raytheon NOS black plates D getter NOS 1956 in white box, reddish-orange printing, from factory bulk pack of 100

1 section) 36.0ma Gm=11,500

1 section) 41.0ma Gm=11,800

good as driver tube or output buffer tube