This is apparently the Rittscher family Coat of Arms though I do not know exactly where it orginated. It came to me via my mother from someone in Germany. The coat is very similar to other family coat of arms. I believe the symbolism in the coat is centered around the early history of the Rittscher family as operators of mills that processed grain into flour. Hence there are symbols of gears and grain. Though I have no idea what the arrow in the bottom of the coat might represent. Possibly the star-like symbols are bushels of grain.
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