1980 AD., Belgium, Baudouin I, 150th Anniversary of Independence commemorative, Brussels mint, 500 Francs, KM 161.

Belgium, Baudouin I, 150th Anniversary of Independence commemorative, engraver: Paul Huybrechts, Brussels mint, 1980 AD.,
500 Francs (ø 37 mm / 24,67 g), silver clad copper-nickel (planchet: 71,5% copper, 23,5% nickel, layer: ~5% nearly pure silver), 25,00 g. theor. mint weight, mintage 1.000.000 , axis coin alignment ↑↓ (180°), plain edge with a darker seam of the copper -nickel core,
Obv.: 1830 / BEL- / GIQUE / 1980 , five heads of the five kings of Belgium facing left in separate medallions, 1st king Leopold I (left, 1831-1865), (on top) his son 2nd king Leopold II (1865-1909), (middle) his brother 3rd king Albert I (1909-1934), (right) his son 4th king Leopold III (1934-1951), (lower-right) his son 5th king Baudouin (1951-1993), years of jubilee in left field divided by country name in French, crown below 1830.
Rev.: 150 ANS / D'INDEPEN- WBB / DANCE DE / LA BELGI / QUE PH / 500 / F , map of Belgium with incuse French text, value below divided by mint and privy mark (left, mintmaster's privy mark) bird (b, Vogelier)
(right, mintmark) angels head (Brussels Mint). Designer initials to the right.
KM 161 ; LA BFM-214 ; Mor 800 .

Year / Mintage
1980 / 1.000.000

Belgium, officially the Kingdom of Belgium, is a sovereign state in Western Europe bordered by France, the Netherlands, Germany, Luxembourg, and the North Sea. It is a small, densely populated country which covers an area of 30,528 square kilometres (11,787 sq mi) and has a population of about 11 million people. Straddling the cultural boundary between Germanic and Latin Europe, Belgium is home to two main linguistic groups: the Dutch-speaking, mostly Flemish community, which constitutes about 59 percent of the population, and the French-speaking, mostly Walloon population, which comprises about 40 percent of all Belgians. Additionally, there is a small ~1 percent group of German speakers who live in the East Cantons.
Historically, Belgium lay in the area known as the Low Countries, a somewhat larger area than the current Benelux group of states that also included parts of Northern France and Western Germany. The region was called Belgica in Latin, after the Roman province of Gallia Belgica. From the end of the Middle Ages until the 17th century, the area of Belgium was a prosperous and cosmopolitan centre of commerce and culture. From the 16th century until the Belgian Revolution in 1830, when Belgium seceded from the Netherlands, the area of Belgium served as the battleground between many European powers, causing it to be dubbed the "Battlefield of Europe", a reputation strengthened by both world wars.
In 1830, the Belgian Revolution led to the separation of the Southern Provinces from the Netherlands and to the establishment of a Catholic and bourgeois, officially French-speaking and neutral, independent Belgium under a provisional government and a national congress.
The people of the south were mainly Dutch-speaking Flemings and French-speaking Walloons. Both peoples were traditionally Roman Catholic as contrasted with Dutch Protestants in the north. Many outspoken liberals regarded King William I's rule as despotic. There were high levels of unemployment and industrial unrest among the working classes.

More on https://en.wikipedia.org/wiki/Belgium https://en.wikipedia.org/wiki/Belgian_Revolution