| 21. | The overprints could be used to illustrate the politics of the 1911 Revolution.
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| 22. | The accompanying image shows genuine overprints, and forged overprints from an internet auction.
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| 23. | The accompanying image shows genuine overprints, and forged overprints from an internet auction.
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| 24. | The Nationalists also produced overprints limiting the use of some stamps to particular provinces.
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| 25. | Overprints of this set were produced for use in Xinjiang, Yunnan and Manchuria.
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| 26. | Owing to different denomination and overprints, there are at least 104 variants catalogued.
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| 27. | However, relicts are found of retrograde overprint.
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| 28. | Overprints are known from about 75 different states.
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| 29. | Many of these were overprinted with a control overprint with the year of issue.
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| 30. | Beginning in 1915, 10s notes included a red " Half Sovereign " overprint.
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