This bulb might be a 'Victora Lamp" made by the Anglo-American Brush Electric Light Corp. of England.
The company was founded in 1880 to sell Charles Brush's Arc systems in the UK (A. Allerhand, pp259), but their initial involvement with Incandescent lighting was with St. George Lane Fox.
The stem structure of their lamps is very similar to that of Brush's American incandescent lamps from the mid 1880's onward, however Anglo-American Brush sold lamps labeled as "Lane Fox" by 1883 with such a stem design. Their slightly later base is very much like a Brush Swan base, but it is smaller.
Outside of Adam's book, some of this info comes from research done with the help of Adam Allerhand on a bulb from my collection. Photo credit of the advertisement to Adam Allerhand.
Note that the Ad is from 1885 (dated by publication Adam found it in), and the bulb has a date of 12/88 scratched into the base. The Anglo-American Brush Co was out of business by 1889.