Montevideo Hill Fortress 20 Centésimos Uruguay Authentic Coin Money for Jewelry and Craft Making (Fortaleza del Cerro) (Dodecagonal Coin)

Montevideo Hill Fortress 20 Centésimos Uruguay Authentic Coin Money for Jewelry and Craft Making (Fortaleza del Cerro) (Dodecagonal Coin)

Obverse: Fortress on Montevideo's Hill, short name of the country on top, date below.
Lettering: URUGUAY

Reverse: Value flanked by Olive sprigs.
Lettering: 20 CENTESIMOS

Features
Issuer Uruguay
Period Oriental Republic of Uruguay (1825-date)
Type Standard circulation coin
Years 1976-1981
Value 20 Centésimos (0.20 UYN)
Currency Nuevo peso (1975-1993)
Composition Aluminium-bronze
Weight 5 g
Diameter 22 mm
Thickness 2 mm
Shape Dodecagonal (12-sided)
Technique Milled
Orientation Medal alignment ↑↑
Demonetized 30 November 1991
Number N# 5297
References KM# 67, Schön# 49, SA# 103, 111, 117, 122

Wikipedia:
Fortaleza del Cerro, also known as Fortaleza General Artigas, is a fortress situated in Montevideo, Uruguay overlooking the Bay of Montevideo. It belongs to the barrio of Casabó, at the west of Villa del Cerro. It holds a dominant position on the highest hill of the department of Montevideo (popularly known as Cerro de Montevideo with its altitude of 134 meters above sea level the sea, on the opposite side of the bay. Its function was to defend the population of Montevideo and its port, on the río de la Plata. Governor Francisco Javier de Elío ordered construction in 1809 and it was completed in 1839; this was the last Spanish fort built in Uruguay. It has housed the Military Museum since 1916.