My Dad's Favorite Clock

My Dad was an old school watch maker and this brass carriage clock was one of his favorite pieces. I am trying to identify the maker and timeframe of its manufacture. I believe it is English as the markings on the back plate are in English and they use the old version of the word "Alarum". The only makers mark that I potentially see is on the bottom of the carriage and it is worn. It is an oval with letters stamped in it. To me, using a magnifying glass, it looks like it could be "B&G" but the first letter is really worn, so tough to tell. The bottom of the base and the back plate have matching numbers etched in them "4114". I find this clock design unusual when I look on the internet as it has a smooth top with no pins or knobs for adjustments of any kind. As a kid, I always thought that it was strange the the main clock face was in Roman Numerals, but the alarm face was in English numbers. It is 5 1/8" high, 3 1/4" wide and 2 7/8" deep.