Panama. Central Bank of Issue of the Republic of Panama. 1941 "Arias Seven Day" Issue. 1 balboa Type 1941. Date: October 2, 1941. Dimensions: 158 x 67 mm. Watermark: None. Material: Paper. No security thread. Printer: Hamilton Bank Note, New-York, USA. Front and back: Polychrome printing predominantly purple, red and green. Description of the front: Frame composed of guilloche patterns with the value in the corners. Numbering in black. In the center, a portrait of the Spanish conquistador Vasco Núñez de Balboa (1475-1519). Texts in Spanish. Combination of signatures with the Comptroller General, Augusto Guillermo Arango and the Minister of Finance and Treasury, Enrique Linares Jr. Description of the back: Frame composed of guilloche patterns and rosettes with the value in the corners. Texts in Spanish. In the center, the coat of arms of Panama.