Apparently Franciszek Jerzy Kolschitzky was born in Kulchytsi, then Polish-Lituanian Commonwealth (now Western Ukraine), had noble origins, the so called 'Sas Coat of Arms', which is reperesented by a crescent, stars and an arrow.
Apparently the motto that he was ascribed by King Jan was an addition to his existing coat of arms.
Now, looking twice to the coat of arms of your blade, we can discern a crescent and one star in the more clear side.
So not only the motto was adopted to this sword decoration but also the whole heraldic symbol.
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