Technical One for flathead gurus?

what's this coil? I know it's Ford. It's almost the same as what's found on late 30s flatheads. But the 2 legs coming down at a 45*angle at the bottom are new to me. Where was it used?

 

A 37-41 factory modified coil for mounting to a 42-48 Ford or Mercury coil bracket.
Probably after market.

 

Thanks. I hadn't seen one before. This one had the Ford script on top.