I found my big one....
A word of warning if you have a leather cover for one of these. I pulled this one out of a cover I've had it in for close to 40 yrs and it was corroding the end pieces. I think I will treat this like I treat my cameras. Store it naked as cases can only harm them with the way they attract and hold moisture, even when stored in a dresser drawer that doesn't see a lot of change temp/humidity wise.