Postage stamps and postal history of La Agüera

Alfonso XIII and inscribed "SAHARA OCCIDENTAL / LA AGÜERA".^[1] These were superseded in 1924 by stamps of Spanish Sahara, as La Güera was incorporated to the Spanish colony of Rio de Oro. The stamps of La Agüera are not rare, typically costing about US$1 either used or unused, but because of the small population (probably fewer than 1,000 persons) and short period of validity, non-philatelic uses on cover are likely to be hard to find.^{[citation needed}