I found the coronation bouquet posted here -
http://members.boardhost.com/coronation/msg/1357580953.html

and I do think you are on to something there, Baxter. A good match.

I have not heard before about the Queen receiving a recreation of the bouquet each year. I wonder who gives it?
And I have not heard of a presentation brooch. Someone is sure to know more about this.

Here again is the Queen carrying the bouquet.