1951 AD., Portugal, Republic, Lisbon mint, 2,5 Escudos, KM 580.

Portugal, Republic, Lisbon mint (Casa da Moeda), engraver: Fragoso, designer: João da Silva, 1951 AD.,
2,5 Escudos (ø 20 mm / 3,50 g), 0.650 silver, 3,50 g. theor. mint weight, mintage 4.000.000 ,axes medal alignment ↑↑ (0°), reeded edge,
Obv.: REPUBLICA · PORTUGUESA / FRAGOSO.GR. - J. DA SILVA / 1951 , caravel saling left on waves, engraver´s and designer´s signature below, date below.
Rev.: 2 $ 50 , Portuguese Coat of Arms at center: shield over armillary sphere - shield having seven castle towers surrounding five shields in the form of a cross, each one displaying five bezants, all superimposed upon globe, value below.
KM 580 ; Alberto Gomes R 30.12 .

Year / Mint Mark / Mintage
1932 2,592,000
1933 2,457,000
1937 1,000,000
1940 2,763,000
1942 3,847,000
1943 8,302,000
1944 9,134,000
1945 6,316,000
1946 3,208,000
1947 2,610,000
1948 1,814,000
1951 4.000.000

An armillary sphere is an astronomical instrument used for calculating a position of astronomical objects and thus supporting sailing. The shape of armillary sphere is composed into Portuguese Coat of Arms and flag.