487th Bomb group emblem question

[Johnny Signor]

Hello,anyone out there know of the time frame and or designer for the emblem of the 487th BG that had the following details and was on a window in the Lavenham Air base officiers Bar, emblem on a blue shield a large yellow aerial bomb nose pointing towards right bottom corner tail to upper left corner,above bomb on right a Sagorro catus in yellow and below bomb on left a Joshua Tree in yellow, above shield a ribbon bar of alternating yellow and blueand atop ribbon on left a side view of a B-24 and to the right a side view of a B-17 and between them a white star w/red dot center and two blue wings upraised one each side of star, at shield bottom a motto scroll/ribbon with the words "Strength and Precision" scroll is yellow w/blue or black words.
This emblem was later replaced by the "Gentlemen From Hell" design, anyone who can help with the first design Please contact me at
[email protected]
Thank you !!!!!