'Wattle Day for Children' fundraising button c.1930 - small size

Circular fundraising badge or button sold to support the 'Wattle Day for Children' appeal c.1930. It is made from printed paper between a tin base and celluloid cover.
It features a central depiction of an Australian kookaburra on a thin branch, its tail elevated and beak open as if singing. The background is a pale blue green colour. The words 'Wattle Day for Children' are written around the top in black letters.
The badge has a broad, colourful border of yellow dots and green leaves representing wattle foliage, on a black background.
The reverse has a shiny silver metal back with a void into which a metal pin is secured for attachment.