St. John Ambulance Brigade celluloid fundraising pin

St John Ambulance Brigade fundraising celluloid pin featuring the black and white image of a woman dressed in uniform, cape and hat. A St John Ambulance Brigade Maltese Cross badge appears on the cape.
The pin follows the contours of the woman to the bottom of the skirt before broadening to a base. The base is geometric in shape and has the words 'St. John' on one side, 'Ambulance' in the centre and 'Brigade' on the other side. There are some closely spaced horizontal lines behind the legs and around the feet.
It has a metal pin threaded through a small hole attachment. The reverse of the pin is buff coloured card and there are no markings.