Glasgow hallmark date

Hi all can anyone help me interpret this, what I believe to be Glaswegian hallmark on a Robert Allison brooch

TIA

The date letter is a very stylised A and is the code for 1949.

Phil

Robert Allison

Robert Allison & Son (from 1954)

Assay Office: Glasgow
Dates seen: 1945…1960 (registered Nov 1941)
Notes: Robert Allison & James Allison, trading as Robert Allison & Son

Here’s the Assay Office stamp with the stylised A

Here’s another broach by Allison with a Glasgow mark:

Christopher