Boys Brigade officers hallmarked 1929 silver hat badge

A rare original circa 1929 'Boys Brigade silver glengarry hat badge'; die-cast strap mounted with 'Sure & Stedfast' fouled anchor. the reverse impressed with Birmingham silver hallmarks for 1929 and maker's details 'S&W Ld'. Very good condition, complete with two loop fittings each stamped with a silver lion passant and silver coloured split pin.Height 44mm.