Stamps, Minerals 2011 issue
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Comoro Islands
postage2011, Jul 28 Minerals 2011 issue - minerals (2011 Comoro Islands) unwmk p. 12x13.25 (24 stamps)
| - | 400fr | multi | elbaite, tourmaline & sphalerite | |||
| - | 400fr | multi | malachite, cerussite & dolomite, hematite | |||
| - | 400fr | multi | ||||
| - | 400fr | multi | ||||
| - | 400fr | multi | ||||
| - | 450fr | multi | ||||
| - | 450fr | multi | ||||
| - | 450fr | multi | ||||
| - | 450fr | multi | ||||
| - | 450fr | multi | ||||
| - | 475fr | multi | ||||
| - | 475fr | multi | ||||
| - | 475fr | multi | ||||
| - | 475fr | multi | ||||
| - | 475fr | ultra | ||||
| - | 500fr | multi | pyrite & hematite | |||
| - | 500fr | multi | Apophyllite & Vanadinite | |||
| - | 500fr | multi | ||||
| - | 500fr | multi | ||||
| - | 500fr | multi | ||||
| - | 2000fr | multi | ||||
| - | 2250fr | multi | ||||
| - | 2375fr | multi | ||||
| - | 2500fr | multi |
Democratic Republic of the Congo
2011, May 18 Minerals 2011 issue - minerals (2011 Democratic Republic of the Congo) (no perf info)
| - | 1350Fr | multi | ||||
| - | 1350Fr | multi | ||||
| - | 1350Fr | multi |
Guinea
2011, Aug 30 Minerals 2011 issue p. 13 (8 stamps)
| - | 5000fg | multi | — | — | ||
| - | 10000fg | multi | — | — | ||
| - | 10000fg | multi | — | — | ||
| - | 10000fg | multi | — | — | ||
| - | 10000fg | multi | — | — | ||
| - | 10000fg | multi | — | — | ||
| - | 15000fg | multi | — | — | ||
| - | 25000fg | multi | — | — |
St. Thomas & Prince Islands
2011, Mar 30 Minerals 2011 issue
| - | 45000db | multi | — | — | ||
| - | 45000db | multi | — | — |
North Korea
2011, Dec 5 Minerals 2011 issue p. 13.25
| - | 30w | multi | Limonite | |||
| - | 42w | multi | Kotoite | |||
| - | 58w | multi | Wollastonite | |||
| - | 98w | multi | stibnite |
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