British
Horological Institute:
The world's oldest professional horological
organization.
American
Watchmakers-Clockmakers Institute:
The United States premiere professional
horological organization ensuring the standards of
excellence through a certification program.
National
Association of Watch and Clock Collectors:
A worldwide non profit educational organization
dedicated to the preservation of our horological legacy.
N.A.W.C.C. maintains a world class museum at their headquarters
in Columbia, PA.
