¡¦½ñ̾¡§Political and Commemorative Pieces Simulating Tradesmens' Tokens, 1770-1802¡¦ISBN¡§¡¦Ãø¼Ô¡§Robert Charles Bell¡¦½ÐÈǸµ¡§Schwer Publications, 1987¡¦´©¹Ôǯ¡§1987¡¦²òÀ⡧Limited first Edition 200(150)_signed by the author¡¦¾õÂÖ¡§²Ä¡¦Êݴɾì½ê¡§