6N9S / 1579 (6SL7) matchat par MELZ (Moskva) Sovjetunionen NOS Metal Base
RARE Military 50/60 tal.

Mer info:

6SL7GT / 6N9S MELZ (aka. 1579, 6H9C / 6Н9П) NOS
Double triode equivalent to or directly interchangeable with 6SL7GT, ECC35, 6113,
CV569, VT-229 and Chinese 6N9P,

The MELZ brand is considered to be the absolute highest quality 6SL7GT variant
from Russian production. The quality is on par with the US-made NOS RCA
6SL7GT or VT229; many say even better...

Skickar rekommenderat eller kan hämtas vardagar under arbetstid i Uppsala eller
vid Odenplan (Stockholm) kvällar eller helger.