Lamp Socket w/Diode tab
Miniature Bayonet Lamp Socket (T3-1/4), Support Length 1-1/8 in, Gottlieb A2916
This socket has a diode tab, as well as tabs for the light bulb. Not exactly as shown in the earlier photo, the only difference is the shell now has a tab instead of being directly connected to the metal support arm. If you want that configuration all you have to do is bend the tab for the shell so it connects to the metal tab and solder together...

