What is the APS Expertizing Service?
The APS Expertizing Service is a specialized program offered by the American Philatelic Society that provides authentication and expert evaluation of stamps, postal history, and related philatelic items. This service is particularly valuable for collectors who wish to verify the authenticity of their items, as well as for those seeking to enhance the marketability and value of their collections.
Stamps and postal items submitted for expertization are carefully examined by knowledgeable experts who possess a deep understanding of philatelic materials. They utilize various tools and techniques to assess the items and provide a detailed report on their findings. The result is typically an expert opinion accompanied by a certificate that indicates whether the item is genuine and, if applicable, any notable distinctions such as condition or rarity.
Collectors often benefit from this service when buying or selling items, participating in exhibitions, or simply wanting peace of mind regarding their collections. For those interested in the specifics or the application process, it is advisable to check the APS website for the latest information and guidelines.

Answered Aug 27, 2025
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