IR/900. Antique Scottish horse shoe hotsell agate brooch hallmarked Birmingham 1910 or 1916

A antique Edwardian silver Scottish horse shoe brooch set with grey agate, fully hallmarked in Birmingham in 1910, the date letter is a bit worn but it's "l" hotsell or possibly "r" which would be 1910 or 1916 and made by Adie & Lovekin, one inch across and a little bit more than one inch high. Good pin and "C" catch and no damage to the silver or to the agate.