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The most frequent objects depicted on coats of arms are:
lion, eagle, fleur-de-lis, cross, castle, stars, crescent, chevron, bear, wolf, sword, shell, sun, dragon, horse, rose, crown, tree, wheel, ship, axe, boar, keys, griffin, lily, anchor.
(see here over 7500 https://w.wiki/9Ygr , courtesy of @wikidata )

So I was pleased to stumble upon the coat of arms of Mynämäki, Finland, showing three quills.