seal matrix - boston, stamford and birmingham railway, stamford and wisebech line

Seal matrix, Boston, Stamford & Birmingham Railway, Stamford & Wisbech Line, 1848, steel disc enclosed in brass, full title around circumference enclosing two shields either side of a trident with a fish wrapped around it and a 2-2-2 locomotive on top, below which is a scroll with 'Incorporated 1848'.