Operated from 1990 to 1992, using cancellations only.
Updated 17th July 2003
Operated from 1993 to 1995, possibly later, using cancellations only.
Updated 18th July 2003
Operated from 1982 onwards, using a cancellation only.
Updated 2nd January 2006
Operated from 1987 onwards, issuing stamps.
Updated 24th July 2005
Operated from 1988 onwards, using a cancellation only.
Updated 3rd December 2006
Operated from 1985 onwards, issuing stamps.
Updated 24th July 2005
Operated in 1985, issuing stamps.
Updated 28th September 2003
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