Bulgaria : Stamps : Catalogs List [Emission: Commemorative] : Colnect 📮
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Stamp catalog › Catalogs List (Emission: Commemorative)
AFA number (2,139)Colnect codes (303)Michel (6,744)Stamp Number (4,915)Stanley Gibbons (4,650)Unificato (4,352)WADP Numbering System - WNS (627)Yvert et Tellier (5,101)