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Electric power generation and distribution |
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Federal Republic of Germany (28.09.1968) 20 Pf 27.5 * 33 mm Michel 521 75 years of rotary current transmission |
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Federal Republic of Germany (28.09.1968) 30 Pf 27.5 * 33 mm Michel 522 100 years of dynamoelectric principle |
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Federal Republic of Germany, Berlin (08.05.1984) 50 Pf 27.5 * 33 mm Michel 720 100 years of electricity in Berlin |
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Federal Republic of Germany (08.08.1991) 170 Pf 43 * 26 mm Michel 1557 100 years of rotary current transmission |
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Copyright © Andreas Tabak, 1998 - 2006 Last update on 04-Feb-2008 |
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