Grimwade records Alexander Glass as entering a bucklemakers mark on 23th June 1775 at 237, High Holborn.
He was succeeded at 237 High Holborn by Samuel Beedall who entered a mark there on 9th January 1776
Apparently moved, without advising Goldsmiths Hall, to 306, High Holborn by 1780
1780 SUN 1 285 22\02\78 Policy Number 431298 Insured Value £1000
Insured Alexander Glass, Silversmith , Toy and Hardwareman, 306 High Holborn
The probate on 5th August 1799 of the will of Alexander Glass , Silversmith of New Elvet in or near Durham may relate but there is no record of him at the Newcastle Assay office in Gill.