GZ33 Mullard
GZ32 Miniwatt Dario 1950's upside down "cup-shape" getter halo
Mullard CV593 - GZ32 "BROWN BASE" 1965-1967 "O" getter halo
GZ34 Philips Metal Base 1957
GZ34 Tungsram Halo getter
5V4G/CV729 MULLARD BROWN BASE
5AR4 & GZ34 GE Cooper plate
Mullard GZ34 OO Getter
GZ 34 tungsram made by Mullard BB cooper plate
RTC GZ34 made by Mullard BB cooper plate
GZ32 & CV593 Mullard millitary
GZ34 / 5AR4 The fisher made by Mullard blackburn