Boys Brigade ambulance proficiency badge & advanced certificate

A good original circa 1940's 'Boys Brigade Ambulance proficiency' die-cast nickel badge, shield shaped and bearing in relief a 'red painted cross' to the centre, flanked by 'B' 'B' letters, this example with additional red felt cloth backing to signify that an 'Advanced Certificate' having been awarded. Very good condition, retaining original vertical tube joint pin fitting and hooked catch, no sign of any moth to the felt, an excellent example.
Height 28mm.

The red felt cloth 'Advanced Certificate Award' was introduced in 1933.