"chess", "chess set", "chess sets", "chess pieces", "chess museum", "schaak", "Schach", "échec", "ajedrez"
 

257

  • 257: obtained 4-aug-2010
  • Russia, by Carbolite company
  • 1940-1950
  • Carbolite (russian bakelite) K 6.8; p 4.0