Bulgaria 1957 Forest Week

• Issue Date: 16 September 1957
• Designed by: V. Staykov, V. Barakov
• Print Run : #1067 x 5,000,000 / #1068 x 3,000,000 / #1069 x 2,000,000 / #1070 x 1,000,000 / #1071 x 500,000
• Print Process:
• Perforations:
• Bulgarian Catalog Numbers : 1067/71
• Michel Catalog Numbers : 1035/39