silver sweetheart badge

[m.sullivan]

i have come accros a silver sweetheart badge today, which i found between two floor boards. i have spent the evening trying to id it through many searches on the net but cannot find an exact match, many similar but none the same. http://www.ww2wings.com/wings/britai...heart102.shtml is the closet i can find, but on the one i found the R and F letters are the same size as the A. the only markings on the rear are, on the left wing BLB9 and on the right wing SILVER. i can upload a picture if required but was just curious if anybody knew what the markings could tell me.
many thanks m.sullivan