6CG7/6FQ7
9 pin miniature
Medium MU dual triode
6.3v /.6 amp heater
NOS
Realistic labeled
(Radio Shack's house brand)
Short gray plate, copper grid posts, gold plated pins
Appears to be made by NEC (Japan) though
labeled made in Korea.
Comes with Realistic's lifetime guarantee
(good luck collecting on that).
Electrically similar to the larger 8 pin based
6SN7GT
Nice sounding audio triode