This image of Queen Mary has caught my attention. I did the cutting some years ago and, at the time, assumed that the small bandeau was the base of the Girls of Great Britain and Ireland, but now I realise I was mistaken.
As I took this cutting years ago, I have not noted where I initially found it; nor can I find any clues on a Google image search.
Closer view
A photo (1920) showing Queen Mary wearing the base of the Girls of Great Britain and Ireland tiara as a bandeau.
A modern photo showing the tiara with the base.
Has anyone got any ideas?