Great War Tribute Medal, 9ct gold 15gms Manvers Main Colliery hallmark Birmingham 1920, ‘presented to W. Watson by the Company & Workmen for services rendered in The Great War 1914-1919. VF

Manvers Main Colliery was a coal mine, sunk on land belonging to the Earl Manvers on the northern edge of Wath-upon-Dearne, between that town and Mexborough in the Dearne Valley, in the West Riding of Yorkshire, England. The regional headquarters and laboratories of British Coal were situated in the complex.