Mason's Company of London (Stamp 1)

Mason's Company of London (Stamp 1)
Arms:
On a chevron between three towers a pair of compasses expanded
Crest: A castle
Motto: In the Lord is all our trust
Helmet: Esquire
Dimensions (height x width): 78mm x 62mm
Heraldic Charges: castlechevron, on a, betweencompassestowers (3)

Sources