Nice NOS pair of 6SN7GT National Union VT-231 tubes made in the U.S in 1951. Black coated glass, black flat plates, silver printing, black base and bottom square getter (rebranded National International).
Matched pair, also checked for noise and microphonics with same codes 51-40
Click to see All 6SN7 6SN7GT 12SN7 12SN7GT in stock
How much for these?
Hi
Do you have 4 tubes?.
Hiro