Bulgaria 1974. Universal Postal Union.

~10²⁷ €

1

ended

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Bulgaria 1981. Olympic glory.

~5¹³ €

1

ended

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Bulgaria 1979. Joint space flight.

~20⁵³ €

1

ended

mar_dush (13)

Bulgaria 1979. Winter Olympic Games 1980.

~20⁵³ €

1

ended

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France 1924. 8th Olympic Games in Paris.

~30⁸⁰ €

1

ended

mar_dush (13)

Bulgaria 1979. Three blocks with consecutive numbers.

~56⁴⁷ €

ended

mar_dush (13)