ECC82 12AU7 Valvo, 45 degrees declined O-getter, first series, gf0 code, tests NOS

Valvo ECC82/12AU7 made 1960 in the Valvo Hamburg plant. Code on tube is Gf0 (first series/design of ECC82) D0K = Hamburg, 1960, November. 

This tube may have seen minor use. We believe though that it was never used since it is super clean. It tests perfectly and still better than new with 18,5mA/19,2mA with 17mA being the 100% value of a new tube. No original box, comes in plain white box. 

This tube  is guaranteed to be in excellent working condition.