George IV, John Rennie Esq, F.R.S Engineer London Bridge, 15th June 1825 silver medal by William Bain, after Sir Francis Leggatt Chantrey head left, rev, view of bridge and ‘The first stone of this work laid by the right Hon John Garratt Lord Mayor of London on the XV day of june MDCCCXXV and in the sixth year of the reign of his majesty George IV’ below, Jolliffe and Banks Contractors. 64mm diameter. Together with; Victoria, First Stone laid by HRH Prince Albert Royal Exchange Jan 17 1842, silver medal by William Wyon 28 mm diameter. Edward Routh The City, silver medal, by William Wyon. Caroline Protecting 1736 silver medal (converted to broach) by John Sigismund Tanner. Plus London Bridge Commenced 16 June 1826 Opened1 August 1831, tin medal. (5) £300-500 The bronze edition of the John Rennie medal held within the National Portrait Gallery (NPG 679)