Actual pictures. 24.04.22 updated.NOS, never used just tested/matched quad g-807 tubes
Tested with l3-3 tubetester at: Uf=6.3V; Ug2=250V; Ua=300V Ug1=-16V
Results:
1p 1. Ia=52uA ; S=5.1uA/V April 1982
2. 53 4,8 April 1982
2p 1. Ia=69uA ; S=5.5 uA/V April 1982
2. 71 5,9 April 1982
3p 1. Ia=81uA ; S=5.7 uA/V dec 1971
2. 79 5,8 dec 1971
4p 1. Ia=55uA ; S=5.1 uA/V April 1982
2. 53 4,8 April 1982
storage code btaD16