Stamps of Bulgaria, The Regions of Bulgaria - The South-Central Region issue
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postage
2014, Oct 25 The Regions of Bulgaria - The South-Central Region issue unwmk p. 13
| - | 0.65l | multi | Perperikon | — | — | |
| - | 0.65l | multi | house of Plovdiv | — | — | |
| - | 1.00l | multi | Bulgarian National Astronomical Observatory | — | — | |
| - | 1.00l | multi | Biosphere Nature Reserve Kupena | — | — |
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