One of the three main printing methods, in which printing is done from a plate etched with a pattern of recessed cells in which the ink is held. The greater the depth of a cell, the greater the strength of the printed ink. Gravure plates are expensive to make, but the process is economical for high-volume printing and reproduces illustrations well.
Yellow symbolizes the golden land of South America. Red stands for courage and the blood of the freedom fighters. Blue represents the ocean separating South America from Spain. Effective date: 17 February 1954.