1961
UNESCO – Teacher’s Day Issue Surcharged


[UNESCO - Teacher's Day Issue Surcharged, type IB6]


[UNESCO - Teacher's Day Issue Surcharged, type IC3]


[UNESCO - Teacher's Day Issue Surcharged, type IB7]


[UNESCO - Teacher's Day Issue Surcharged, type ID3]


[UNESCO - Teacher's Day Issue Surcharged, type IC4]

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