I have just located a crank handle for my 50 AD. I have just about all the truck tools and this is the missing link, you gotta love these tools

I want to restore this rusty old thing and want too bring it back as new.
Does anyone have an original picture or literature on it?
It appears that the pre vent window trucks had a small indent on the top side of bottom grill bar for crank handle to pass through.
Any help would be great.