1955
Express Domestic Airmail – The 7th Postal Union Congress of the Americas and Spain


[Express Domestic Airmail - The 7th Postal Union Congress of the Americas and Spain, type WH]


[Express Domestic Airmail - The 7th Postal Union Congress of the Americas and Spain, type WI]


[Express Domestic Airmail - The 7th Postal Union Congress of the Americas and Spain, type WJ]


[Express Domestic Airmail - The 7th Postal Union Congress of the Americas and Spain, type WK]

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