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The article focuses on the 94-cent Automated Postal Center (APC) stamp for a regular size letter and the 1.20 U.S. dollars APC stamp for an oversize letter to countries other than Canada or Mexico. With no prior announcements and unknown to collectors, fine paper was introduced to succeed the original coarse paper used on the APC stamps. As a result, fine paper mint examples of these stamps are rare. To identify the stamps, the relevant chronologically numbered transactions at APC kiosks which also appear as control numbers on the stamps is published.