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SCOTT NO
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311 A50
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DATE OF ISSUE
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1986 Mai 22
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FACE VALUE
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2sh
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COUNTRY
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Tanzania
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DESCRIPTION
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The stamp shows sapphire gemstone. The coloring agent is iron & titanium. In artificial light it appears as ink colored. It is widely used in diamond jewelry.
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GEMSTONE
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Sapphire
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VARIATION
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Block, First Day Cover, Envelope
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