I had other guns that I planned to letter first, but since this one is kind of interesting I will move it to the head of the list.
If we can't resolve this with an appeal to Roy and the records, I offer two new categorizations that collectors can choose between:
The Double Terrier
The Semi-Regulation Police
Or maybe:
The Extended Terrier
The Compressed Regulation Police
Check this space in about four-five weeks!