Boilermakers & Iron & Steel Shipbuilders trade union badge

A scarce original turn of the 20th century 'Boilermakers & Iron & Steel Shipbuilders union badge', gilded brass example bearing blue enamel title surround, the centre depicting an old embossed steam ship. Very good condition, complete with early style round buttonhole fitting, enamel intact, gilt finish remains bright, small age blemish to top centre. Diameter 23mm.