+21 Illinois Apostille Services Chicago Il 2025. An apostille certifies the validity of an illinois notary public, county clerk, circuit clerk or local registrar. This special certification is accepted by foreign countries as proof that specific.

An apostille certifies the validity of an illinois notary public, county clerk, circuit clerk or local registrar. Certificates of authority are issued. Apostilles and certificates of authority apostilles are issued for documents for use in countries that are members of the hague convention abolishing the requirement of legalization for foreign public documents (1961), or more commonly known as the hague apostille convention.