USA
Viser nå: USA - Postfrimerker (1847 - 2024) - 4 frimerker.
7. June VM: Ingen Arkstørrelse: 20 Perforering: Rouletted 11 on 2,3 or 4 sides
26. July VM: Ingen Arkstørrelse: 20 Perforering: Rouletted 8½ horizontal
26. July VM: Ingen Arkstørrelse: 20 Perforering: Rouletted 11 on 2,3 or 4 sides
3. September VM: Ingen Gravering: Avery Dennison Perforering: Rouletted 11 x 11¼ on 2 or 3 sides