Combination (C)

Soviet Union 1972 / Set of 5 stamps / mint condition /

Michel #3979-83 / Yvert #3809-13

+

Soviet Union 1972 / Mini-sheet perforated (issued on January 20th) / mint condition /

Michel #Block 74 / Yvert #BF73

+

Soviet Union 1972 / Overprinted Mini-sheet (issued on March 20th) / mint condition /

Michel #Block 75 / Yvert #BF74

Note: The black hawid is not included.