定義

• AR.  Abbreviation for silver (Latin, argentum).  See silver, composition (2).
  Reference:                                                                                                                                
  NE42 {1982} Doty, p 12.               

  excerpted with permission from

  An Encyclopedia of Coin and Medal Technology

  For Artists, Makers, Collectors and Curators

  COMPILED AND WRITTEN BY D. WAYNE JOHNSON

  Roger W. Burdette, Editor

人际关系