In his post which showed artillery tools from the sunken USS Cairo (ironclad gunboat) CWArtillery wrote:
> Has anyone else seen this style? Perhaps they aren't fuse wrench at all. They look very much like a key.
Your guess is correct, that style is not a fuze wrench, and is a key. Specifically, a key to the very special kind of lock on a Navy artillery fuze storage box. I currently cannot recall that special lock's name ...but like shells, it was named for its inventor. Note, the lock was not separate from the box, like a padlock, but was built into the box's wooden side. They are extraordinarily rare, because the Army Field Artillery seems to have never used them. A couple of that special type of Navy fuze-box lock, and several keys for it, were found where the 7" Mullane and Brooke shells were dumped off of the CSS Richmond into the James River below Richmond VA.
Perhaps somebody here whose brain isn't as elderly as mine can recall the name of that special lock for Navy fuze-boxes.
Regards,
Pete