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SCOTT NO
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788A A188d
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DATE OF ISSUE
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1998 Dez 11
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FACE VALUE
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475fr
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COUNTRY
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Chad
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DESCRIPTION
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The stamp shows Apatite.It is derived from a greek word meaning to deceive. Its varied colors caused minerologists to confuse it with other minerals. A thin chip will color a gas flame orange when it is wet with sulphuric acid it colors the flame bluish.
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VARIATION DESCRIPTION
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FDC issed on December 11th, 1998 minerals & gemstones. Print on the the left shows a map of Chad. It depicts a routine cancellation.
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GEMSTONE
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Apatite
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VARIATION
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Souvenir Sheet, First Day Cover, Envelope
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