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CHAPTER TWO GROOMING STANDARDS SECTION 1: …
pewter plating wears off and the copper base becomes cov-ered with green copper carbonate due to exposure to moist air. You can remove the green coloring by rubbing gently with acetic acid or any substance containing this acid such as vinegar or Worcestershire sauce, followed by a thorough washing in clean water. b. Embroidered Insignia.
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