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| Start / | Knowledge / | Stamps / |
| Categories | Category Changes | Changes | Designs | Differences | Do It Yourself Postage Stamps | Fakes | Issue Occasions |
| Kinds | Parallel Issues | Quality | Shapes | Sizes | Semi-postal Postage Stamps Issue Occasions | ||
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Knowledge / Stamps / Postage Stamps / Category Changes |
Postage stamp category change: postage stamp converted time-shifted into a different category of postage stamp |
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Change long term postage stamp to commemorative postage stamp: long term postage stamp converted time-shifted into a commemorative postage stamp |
Change official postage stamp to definitive postage stamp: official postage stamp convert-ed time-shifted into a definitive postage stamp |
Change definitive postage stamp to official postage stamp: definitive post-age stamp converted time-shifted into an official postage stamp |
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Without overprint: long term postage stamp |
Without overprint: official postage stamp |
Without overprint: definitive postage stamp |
Change definitive postage stamp to express delivery postage stamp: definitive postage stamp converted time-shifted into a express delivery postage stamp |
Change definitive postage stamp to parcel post postage stamp: definitive postage stamp converted time-shifted into a parcel post postage stamp |
Change air post postage stamp to air post semi-postal postage stamp: air post postage stamp converted time-shifted into an air post semi-postal postage stamp |
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Without overprint: definitive postage stamp |
Without overprint: definitive postage stamp |
Without overprint: air post postage stamp |
Change air post postage stamp to parcel post postage stamp: air post postage stamp converted time-shifted into a parcel post postage stamp |
Change parcel post postage stamp to definitive postage stamp: parcel post postage stamp converted time-shifted into a definitive postage stamp |
Change public postage stamp to off-ice duty postage stamp: public postage stamp converted time-shifted into an office duty postage stamp |
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Without overprint: air post postage stamp |
Until 30.06.1913: parcel post postage stamp |
Until 19.01.1922: public postage stamp |
Change commemorative postage stamp to air post postage stamp: commemorative postage stamp convert-ed time-shifted into an air post postage stamp |
Change commemorative postage stamp to commemorative semi-postal postage stamp: commemorative postage stamp con-verted time-shifted into a commemorative semi-postal postage stamp |
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Without overprint: commemorative postage stamp |
Without overprint: commemorative postage stamp |
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