WW1 Speed Up Munitions tribute medal badge

A scarce First World War munition workers ornate gilt medal inlaid with blue enamel, depicting a winged 'Heavy Artillery Gun' with "Speed Up Munitions" title scroll below, the reverse embossed with "The Great War For Freedom 1914 Did His Bit On Munition Work" with "Rd 657674" a registered, design and patent date of 1915. Very good condition, retaining original ring suspension, enamel intact, gilt remains bright.
Height excluding ring 30mm.

Code: 54096