Numismatic organizations - associations

SGCA is dedicated to the goal of implementing a single global currency by 2025. We shall achieve this goal through education and persuasion. The Single Global Currency Association was formed in June, 2003 by morrison bonpasse of Newcastle, Maine.
http://www.singleglobalcurrency.org/

Italian language site.
http://www.socnumit.org/

With over 50,000 members in more than 110 countries, the APS is the largest, nonprofit society in the world for stamp collectors.
http://www.stamps.org/