Watch List notes:

The Portland Collection, Commemorative Medals, Transport: Railways and Bridges, Newcastle upon Tyne and Gateshead, the York, Newcastle and Berwick Railway, the High Level Railway Bridge, 'Final Opening', 1850, silver medal, unsigned, Royal train stopped on the High Level Railway Bridge, rev. FIRST PILE DRIVEN ... ENGINEERS ROBT STEPHENSON ..., 45mm. (BHM.2409, not recorded in silver, however white metal and copper examples both R3; Swan 62 - 63, copper and white metal), obverse toned, mint state and exceptionally rare
*ex Baldwin's Auctions 93 (5 May 2015), lot 495
The bridge was built for the York, Newcastle and Berwick Railway and opened 15 August 1849. The Queen's visit was on 28 September, when she received addresses from the mayors of both Newcastle and Gateshead.