Jim,
I'll save you the trouble, but you can post some pics of the barn post-move if you want.
Gary,
Here is the back of the bulb for my '82 car. It's actually not a 4416 and it's marked 4400. Definitely a dual filament bulb, and the adapter piece is only marked with a "H" for manufacturer and "low beam", "high beam", and "ground" at the terminals.