(!!!!!) (BEST OVERALL SINGLE) CV378=GZ37 Mullard "D" getter NOS 1955 faded printing (56/40 and 56/40) (1st version made with skinny bottle)
(!!!!) (Best Matched Quad) CV378=GZ37 Mullard NOS 1966 same date codes original boxes
(!!!!) (Best Single) CV378=GZ37 Mullard UK NOS 1966 (53/40 and 54/40)
(!!!!) (Best Single) CV378=GZ37 Mullard UK NOS 1967 (50/40 and 50/40) 1% section balance
(!!!!) (Best Single) GZ37 Mullard NOS "O" getter 1966 (52/40 and 52/40)
(!!!!) (Best Value Pair 1955) CV378=GZ37 Mullard "D" getter NOS 1955 faded printing (56/40 and 56/40 x 2 tubes)
(!!!!) (Recommended Single) CV378=GZ37 Mullard UK NOS 1967 (52/40 and 54/40) 1-3% section balance
(!!!!) (Recommended Single) GZ37 Mullard UK NOS 1966 (50/40 and 51/40)
(!!!) (Recommended Single) CV378=GZ37 Mullard NOS "O" getter halo 1967 (50/40 and 50/40)