Yes those brooches are the same...I remember having long extensive discussion about it and the photo of Queen Mom which you posted was also used in the discussion hope this helps.
--Previous Message-- : : And this one of Camilla was taken with my : digital camera from "Majesty's July : 2010 issue page 11" : : : I took this one of the Queen Mother with my : digital camera from "The Queen Mother: : The Hulton Getty Picture Collection page 134 : it just say's it part of a Hulton/Getty : collection" : : Are they the same to you as they are to me? : PJ : :