(slightly microphonic tube) JRP-5687 Raytheon NOS black plates D getter NOS 1956 (40.5/45.5ma)

1 slightly microphonic tube) JRP-5687 Raytheon NOS black plates D getter NOS (6-23=1956) in white box, reddish-orange printing, from factory bulk pack of 100

1 section) 40.5ma Gm=13,100

1 section) 45.5ma Gm=12,700

good as driver tube or output buffer tube