钱币参考书目4本,详见图示. A group of 4x coins reference books, Money in Britain, written by C. R. Josset, 1962, and Colonial and Commonwealth Coins, written by L. V. W. Wright, 1959, Coins and Christianity, written by Kenneth Jacob, 1985, and Coin Collecting as a Hobby, written by Burton Hobson, 1986,well preserved (4).