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Germany (DDR)
Democratic Republic |
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5 Mark, 1969
KM#23
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75th
anniversary of the death of Heinrich Hertz
|
||
 |
|
|
Germany (DDR)
Democratic Republic |
|
|
|
5 Mark, 1969
KM#23
|
|
|
|
||
|
75th
anniversary of the death of Heinrich Hertz
|
||
|
|