Unreleased Stamps
Nevydané Známky
Several values in the series were proposed but not used: 50h, 1200h, and 2000h. While some of these were actually announced for release, none were, but numerous trial prints in many forms and colors exist. Only the 125h, 500h, and 1000h actually saw service as postage stamps. A change of color for the 1000h stamp was proposed but never implemented.
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