A very rare survivor. Although signed by a London retailer and with a London hallmark this watch was almost certainly made in Coventry although I do not know by who, a larger version I have seen was signed by the Army & Navy Store but also not by the maker. Marked as a size 5 but measuring closer to a size 4 this would have been a Ladies watch or a Gent's Fob Watch.
The movement is engraved Vine & Thompson, 85, Aldersgate Street. E.C. London, Vine and Thompson, previously Thompson and Vine, are listed as Clockmakers working from 1868-1957.
The Consular style swing out case has London hallmarks for Sterling Silver, 1891 and the makers mark of William Bullock, Cherry St, Coventry.
Someone made a transposition error with the serial number on the case with the 2nd and 3rd digits out of order. The case measures 1.6" / 4 cm excluding the pendant etc.