Gaunt.London and Firmin.London Police Cap badges

[billy4294]

Good Afternoon,
I came across these two Police badges yesterday. The Nottinghamshire Combined Constab. has the Gaunt dot London makers mark on the slider, while the Gwent Constab. has Firmin dot London on it's slider.
I haven't seen the Gaunt mark on a police badge before, and I have never seen Firmin dot London on a slider at all, so I presume that the Firmin mark is fake also.
billyh