This is a very interesting pin on offer here.
Condition is reasonable for its age as per the picture.
This pin would probably be of 1970’s vintage as it was part of a lot from Europe which held other pins from that era.
The design elements depict a rainbow serpent snake overlayed on a boomerang which bears Aboriginal design motifs.
The Australian Aboriginies have a fascinating culture which keeps their stories and memories alive using tales of the Dreamtime.
This pin back badge is the only one we have ever come across and would imagine that it is a long time withdrawn from general sale.
A really unique piece of Australiana.