4th anniversary of the North Atlantic Treaty

60 £. - Rainbow and map with America and Europe - Color blue and purple - Perforation stamp 14 × 14 ¼ b - Watermark wheel III - Intaglio printing - Printed from IPS Workshop cards values ​​- Sheets 50 - Size 40 × 24 (mm) - Drawing V. Grassi - Circulation 4.000.000.