Stamps of Guatemala, National Observatory design
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postage
1926, Jul 1926 issue Waterlow print unwmk (no perf info)
| X | 2p | org | National Observatory |
1928 ovpted Waterlow print
| X | 1/2c on 2p | org | National Observatory | — | — |
1929, Jan 7 1929 issue
| X | 1/2c | yelgrn | National Observatory | .20 |
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