The WW 2 Germanicon minitures, both bayonets & daggers were not letter openers - altho I'm sure some were used for that - they were salesman sample pieces. I've got several and have had others over the years.
I'm don't know what the story is for other countries or for the US. I have a 10½" Garandicon miniture, but it is from a foriegn country.
Sarge