4th centenary of the reform of the Gregorian calendar

200 + 300 + 700 £. - Papal coat of arms and endorsements - Color polychrome - Stamp Perforation 13 ½ × 14 b - Printing Rotogravure and offset printing - Printed from IPZS Rome - Sheets - Size 160 × 110 (mm) - Circulation 675,000