Bibliography
Automatically generated translation
1960. Second Supplement to the Catalogue of Special Postmarks: First Days, Air Markings, and First Flights of Spain, African Provinces, and Former Protectorates 1940-1960. Alert Riba. Barcelona, 1960.
A book
20g
Price 25€
Illustrative price in other currencies
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$ 27
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£ 21
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CHF 24