Modernist Silver Enamel & Amethyst Brooch Attributed to Charles Horner Slight AF

A tiny little silver brooch dating from the early 1900s
Featuring a nod to Egyptian revival jewellery and Charles Rennie MacIntosh modernism, the central stone is a rough cut amethyst and the wings have been decorated with bright blue enamels set within an abstract flower shaped motif
The brooch is marked on the reverse 925 for silver but Charles Horner's initials are not present
However in the estate sale, I missed the signed version which was fully Charles Horner hallmarked and it is thus that I attribute the design to his studio
The silver has surface wear and there is some loss to the enamel but this is much magnified in the photographs and the brooch is still eminently wearable
A real find, the brooch measures 34mm wide and 22mm high (1.25" and 7/8th")
Happy to combine postage where possible