(!!!!!) (Nice Single) ECC82=12AU7 Telefunken Germany <> bottom ribbed plates used/good 1957 (8.5/8.2ma) (strong Gm)

1 low noise tube) ECC82=12AU7 Telefunken Germany <> bottom ribbed plates used/good 1957 in white box

1 section) 8.5ma Gm=2000
1 section) 8.2ma Gm=2100

Good Ma range 8-10ma

Good Gm range 1800-2200