定義

• Brown. The color of toned bronze and heavily toned copper. Brown is in contrast to red, a collectors' term for mint luster or the untoned finish on bronze coins. Also a wide spectrum of brown colors appear as patina finishes on bronze or copper objects. See patina.
  CLASS 09.2
   
  1025-(016)09.8
   

資源

• D. Wayne Johnson Encyclopedia of Coin and Medal Technology

人际关系