Crystal Palace Exhibition 1851 Exhibitors Medallion Obverse Portrait of Prince Albert. Reverse Globe with legend “EXHIBITOR” Around the edge “United Kingdom Class 22. (Stand) No 548” the entry in the catalogue as follows “548 Macalpine W. Hammersmith. Inventor – Machine for washing linen or cleaning rags for making paper. Patent revolving vessel, with steam apparatus for washing heavy goods” being a large “Washing Machine”. Bronze size 45mm