1976
Airmail – The 441st Anniversary of Guayaquil


[Airmail - The 441st Anniversary of Guayaquil, type BKO]


[Airmail - The 441st Anniversary of Guayaquil, type BKP]


[Airmail - The 441st Anniversary of Guayaquil, type BKQ]


[Airmail - The 441st Anniversary of Guayaquil, type BKR]


[Airmail - The 441st Anniversary of Guayaquil, type BKS]


[Airmail - The 441st Anniversary of Guayaquil, type BKT]

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