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A sign in the series of signs in Madrid, made of clay and depicting in an illustration one of the elements of the street
The square is named after the Battle of Callao (1866), a battle named after the city of Callao in Peru. A naval battle in which the Spanish fleet attacked the port of Callao as part of the Chincha Islands War (Spanish–South American War). The sign shows an illustration of the shelling of the port
The sign was painted by Alfredo Ruiz de Luna Gonzalez