Liberal Victory, Self Sacrifice, Service, c1920s political party badge

A scarce original pre-1928 'Liberal Party supporters badge'; an interesting brass example designed in the style of an arrow inlaid with blue enamelling and inscribed "Liberal Victory Self Sacrifice Service", the reverse with maker's details "Thomas Fattorini Ltd Hockley St Birmingham" (1919-1928). Very good condition, retaining original pin fittings, no stress marks or damage to the enamel.
Width 40mm.