It is the first time I have seen QEQM wearing the double broochES.
She wore the clips at Liverpool Street station with Lady Sarah in December 30th, 1970.
Please also note that the Duchess of Cornwall has worn one of the emeral clips once. I do hope that one day she will wear the two brooches.
Dear Beth, you can post this discovery on your Instagram account if you want.
Ps : sadly I can't post the photo