Martin Hall fork

Good evening
I have obtained this fork today. If I am correct it is by Martin Hall & Company and were made in London in 1877. Any idea what the pattern may be? It seems to have a registration mark on it as well. It have different monograms on each side.
Jannie
IMG_1114.JPG
IMG_1112.JPG
IMG_1108.JPG

Other marks and monograms
Jannie
IMG_1097.JPG
IMG_1111 (2).JPG
IMG_1098 (2).JPG