Today's Quiz I found a box, marked A^M and 5G/192 States "Holds 8 x 5G/191" Inside, 8 what look like bulb holders, 2 pin, with an odd metal plate at the top, maybe 3/4 dia with hole down centre with thread. I don't think they are bulb holders. Explosive charge holders maybe? So, anyone know what a 5G/191 is? cheers, Ben.