This sterling and enamel brooch has markings I can not identify. When I purchased it, I thought it might be by Norman Grant, but when it arrived, the marks did not match. They look like British assay marks and the maker's initials, "B.G."
The assay marks are as follows: lion rampant, what looks to me like the Edinburgh marks, and a lower-case x.
Any ideas on the hallmarks and maker?
Thanks in advance!



