Checklists/Exhibits Perfin Checklists (U.S.) Perfin Checklist Railroad Perfin Checklist Synoptic Lists (U.S.) 1902 Definitive Series 1908 One and Two cents 2c Reds Army-Navy College and Universities Famous Americans National Parks Overrun Countries Panama Pacific Exposition Perfins in Non-Denominational Stamps Personal Patterns Presidential (Prexie) – Excel Presidential (Prexie) – PDF Washington Bicents Exhibits Perfins in the Postage Stamps of Cuba Perfins in the Stamps of Mexico Perfins of Austrian Levant Polarine Covers Swiss Perfin Exhibit U.S. Perfin Covers