Model:
ECC83/12AX7
Brand:
Mazda
Classification:
Twin Triode (silver plate)
Model:
ECC83/12AX7
Brand:
Mullard (modern logo)
Classification:
Twin Triode
Model:
ECC83/12AX7
Brand:
Philips Miniwatt, Gt. Britain
Classification:
Twin Triode
Model:
12AX7A/ECC83
Brand:
Amperex PQ
Classification:
Twin Triode
Model:
12AX7/7025 (ECC83)
Brand:
Amperex
Classification:
Twin Triode
Model:
12AX7A/ECC83
Brand:
Bugle Boy, Holland
Classification:
Twin Triode
Model:
12AX7A/ECC83
Brand:
Bugle Boy
Classification:
Twin Triode (match pair)
Model:
12AX7/ECC83
Brand:
EI
Classification:
Twin Triode