USSR. Sport aircrafts constructed by Yakovlev bureau of construction. Set of 5 stamps
Date of issue: 25 Nov., 1986
4 K. Aircraft Ya-1 (1927)
5 K. Aircraft Ut-2 (1935)
10 K. Aircraft Yak-18 (1946)
20 K. Aircraft Yak-50 (1972)
30 K. Aircraft Yak-55 (1981)
St # SU86/yakovlev
Mi # 5659-5663