History What does this key fit? Ford???

The Bronco was an exception. They used that key till '77.

 

The H stands for "Hokey"

 

It came from a 4 speed T-Bird and that's the shift pattern.

 

Yes your correct. I wonder why Ford kept that old style key just for the Bronco.

 

The H on the key was probably the identifier for that blank by that company. Go to the blank keys board, get a H blank, compare it to the original key, if it matches, cut the key. I imagine different companies ***igned different letters or numbers to their blanks to make it easy to duplicate them.

 

Full size Ford cars used that blank '52- '64, through '66 on trucks, Falcon/Comet/Mustang.