Watch List notes:

Victoria, the International Exhibition 1862, copper prize medal, by L. C. Wyon, after D. Maclise, Britannia seated left surrounded by figures of Arts and Industry, a recumbent lion at her feet, rev. 1862 LONDINI HONORIS CAUSA, in wreath, awarded to Walker Alkali Company, Class II, and named on edge, 76.5mm. (BHM.2747; Eimer 1553), good extremely fine
The Walker Alkali Company of Newcastle-upon-Tyne used the Leblanc process to produce synthetic soda from salt.
(100-150 GBP)