Three crescents interlaced so as to be incomplete Borromean rings.  This was the emblem of Diana of Poitiers and her lover Henry II of France (see external site http://www.liv.ac.uk/~spmr02/rings/moons.html ).  It has also come to be used in the coat of arms of Bréval (see Image:Blason ville fr Bréval (Yvelines).svg) and Crécy-la-Chapelle (see Image:Blason CrecylaChap.svg), and in a slightly different form as the emblem (or "petites armoiries") of the city of Bordeaux (see en:Image:Bordeaux30.jpg).  In recent years, it has been taken up by a few neopagans (as an alternative version of the symbol Image:Triple-Goddess-Waxing-Full-Waning-Symbol.png), though it has an unfortunate resemblance to a modern biohazard symbol...
For a version in symbolic colors, see Image:Three-Crescents-Diane-Poitiers-multicolored.svg .

For a solid form of the symbol, see File:Three-Crescents-Diane-Poitiers-filled.svg or the lower corner of Image:Religious symbols.svg .
SVG version of File:Three-Crescents-Diane-Poitiers.png, converted from a version of the following PostScript vector source code:

%!
306 396 translate 5 setlinewidth 30 rotate
/cresc{-75 0 translate
0 0 150 210 150 arc
-32.1619076 0 123.2009724 142.5 217.5 arcn
closepath}def
gsave cresc clip stroke grestore
gsave 240 rotate cresc gsave 1 setgray fill
grestore clip stroke grestore
gsave 120 rotate cresc gsave 1 setgray fill
grestore clip stroke grestore
gsave -75 0 translate 1 setgray
0 0 150 7 42 arc
-32.1619076 0 123.2009724 42 7 arcn
closepath fill
0 0 150 261 282 arc
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closepath fill
grestore cresc clip newpath 0 setgray
0 0 150 5 45 arc stroke
-32.1619076 0 123.2009724 45 5 arcn stroke
0 0 150 260 283 arc stroke
-32.1619076 0 123.2009724 294 268 arcn
stroke showpage
%EOF
AnonMoos