Stamps, XXI Youth Science and Technology Invention Contest issue

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Macao

postage

2006, Jul 28 XXI Youth Science and Technology Invention Contest issue unwmk (no perf info) (5 stamps)
MO036.06.jpgMO037.06.jpgMO038.06.jpgMO039.06.jpgMO040.06.jpg
- 1.50p multi
- 2.00p multi
- 2.50p multi
- 3.50p multi
- 10.00p multi

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