A version of the Diana of Poitiers interlaced three-crescents emblem in symbolic colors.  See Image:Three-Crescents-Diane-Poitiers.png and Image:Triple-Goddess-Waxing-Full-Waning-Symbol-multicolored.svg for explanations.  A different version of this is used as an emblem of the city of Bordeaux (en:Image:Bordeaux30.jpg).
Own work -- SVG version of Image:Three-Crescents-Diane-Poitiers-multicolored.png . Converted from the following PostScript code:

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closepath fill showpage
%EOF
AnonMoos