1950
Literary Campaign – Overprinted “ALFABETIZACION”


[Literary Campaign - Overprinted "ALFABETIZACION", type ZB]


[Literary Campaign - Overprinted "ALFABETIZACION", type ZC]


[Literary Campaign - Overprinted "ALFABETIZACION", type ZD]


[Literary Campaign - Overprinted "ALFABETIZACION", type ZE]


[Literary Campaign - Overprinted "ALFABETIZACION", type ZF]

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