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airmail semipostal
1967, Dec 23 Child Welfare 1967 b issue - birds (1967 Argentina) unwmk p. 13.5
| - | 26+13p | multi | Ramphastos toco |
1969, Sep 20 Child Welfare 1969 issue - birds (1969 Argentina) (no perf info)
| - | 26+13p | multi | Dryocopus lineatus |
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