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postage
1987, Aug 3 Guyana Railways issue unwmk p. 15
| - | $12.00 | multi |
1988, Mar 24 Orchids 1988 b issue p. 13.75
| - | $12.00 | multi | Zygopetalum rostratum |
1989, Apr 15 Service Stamps - Surcharged issue (no perf info)
| - | $12.00 | multi |
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