A sword or pin with a knot might refer to a Gordian Knot.
--Previous Message-- : As said, for me it looks like a sword cutting : a knot, there is a Dutch saying "de : knoop doorhakken" (litterally: to slash : the knot) which means: taking a decisive : action. : : The intriguing thing then is: why this : design and what was the reason? A decision : by the young Princess Emma von Waldeck und : Pyrmont to engage in marriage with the old : widower King Willem III? : : With some fantasy one can also see a : fleur-de-lys in it, but that seems unlikely : for an Orange-Nassau unless it was probably : a gift by the then Duke of Parma (Prince : François Xavier to Queen Juliana? :