The Last Duke’s Silver Coin Before Russia Took Courland
By Lev Moiseev
A Small Baltic Duchy With an Outsized Story
In the middle of the 18th century, a small duchy stood between the Baltic Sea and Lithuania. Today, we know this region as part of western Latvia. Then, Europeans called it the Duchy of Courland and Semigallia.
The land could be unforgiving. Winters ran long, cold, and windy. Ice held the rivers for months. Summers came late and ended early. In many places, sandy soil limited farming. Pine forests reached toward the sea. Harvests often disappointed.
Yet this small state carried a remarkable history. It had its own laws, its own army, and even launched a merchant fleet that reached West Africa and the Caribbean.
Courland Between Empires
German knights of the Livonian Order controlled these lands during the medieval period. Then, in 1561, the order collapsed. Local noble assemblies swore loyalty to the Polish-Lithuanian Commonwealth. As a result, Courland became a vassal duchy.
That status gave Courland some freedom. However, it never gave the duchy true independence.
Powerful neighbors surrounded it. Poland, Sweden, and Russia all wanted influence in the eastern Baltic. Geography made Courland valuable. Trade with Riga passed through the region. In addition, the ports of Libau and Windau attracted Baltic fleets.
So Courland survived through diplomacy, compromise, and pressure. It remained small, but it mattered.
The Duchy That Reached the Caribbean
Courland’s best-known golden age came in the 17th century under Duke Jacob Kettler. He built ships, expanded trade, and looked far beyond the Baltic.
Courland established short-lived colonies in The Gambia and on Tobago. Few small European states ever reached so far overseas. Therefore, Courland’s colonial episode remains one of the duchy’s most surprising chapters.
However, this success did not last. War, foreign pressure, and limited resources cut Courland’s ambitions short. Even so, the story left a striking legacy. A tiny Baltic duchy once tried to play the game of empires.
Russia Enters the Courland Story
By the early 18th century, Russia had become the decisive power in the eastern Baltic. Peter I understood Courland’s strategic value. In 1710, he arranged the marriage of his niece, Anna Ioannovna, to Frederick William, Duke of Courland.
The marriage lasted only a short time. Frederick William died two months after the wedding. Contemporary accounts say he became ill during the journey from St. Petersburg.
Anna remained in Mitau, the duchy’s capital. She held rank, but she held little real power. At her court, a young Courland nobleman named Ernst Johann Biron began his rise.
Biron had few advantages at first. He served Anna as a secretary. However, he had intelligence, patience, and ambition. Soon, he managed Anna’s estates. Then he became her favorite.
Biron and the Shadow of Anna Ioannovna
In 1730, Russia’s Supreme Privy Council invited Anna to take the throne after the death of Peter II. She had lived in Mitau in relative obscurity. Suddenly, she became Empress of Russia.
Biron followed her to the Russian court. There, he gained major influence. He became grand chamberlain and one of Anna’s closest advisers. More importantly, he controlled access to the empress.
The period gained a dark name: Bironovshchina. Russian critics later used the term for foreign influence, denunciations, court cruelty, and political fear during Anna’s reign. Yet the period also brought German scientists, administrators, and specialists into Russian service.
Biron’s reputation grew darker with time. Officials feared him. Rivals watched him closely. Meanwhile, Anna used her power to advance him.
In 1737, she pushed his candidacy for the ducal throne of Courland. The local estates faced imperial pressure. Polish King Augustus III formally approved the choice. Biron became Duke of Courland.
However, he did not truly rule from Mitau. His influence remained centered in St. Petersburg.
Fall, Exile, and Return
Anna Ioannovna died in 1740. Before her death, she named Biron regent for the infant Emperor Ivan VI. His regency lasted only weeks.
A palace coup ended it. Soldiers arrested Biron and his family. His enemies accused him of trying to seize power. Authorities exiled him to Pelym in Tobolsk province. Later, they moved him to Yaroslavl under house arrest.
Then, in 1741, another palace coup changed Russia again. Elizabeth Petrovna, daughter of Peter the Great, overthrew Ivan VI and took the throne.
Biron remained in disgrace for 19 years. Even so, his exile did not reduce him to misery. He kept a pastor and had a personal doctor. He also influenced some local affairs.
Only Catherine II restored his fortune. Catherine supported the Baltic German nobility, and that policy helped Biron. In 1763, she returned him to the ducal throne of Courland.
Still, he held little real power. In 1769, the aging Biron transferred the duchy to his son, Peter.
Peter Biron: The Last Duke of Courland
Peter Biron was born in 1724. As a child, he shared his father’s exile. Later, after Catherine restored the family, Peter received an elite education in St. Petersburg.
Like many noble children, officials enrolled him in guard regiments when he was still a baby. By age 16, he already wore the Orders of St. Andrew and St. Alexander Nevsky. Those honors did not reflect battlefield merit. They reflected rank, family, and imperial favor.
Peter differed from his father. Ernst Johann Biron wanted power. Peter preferred art, comfort, travel, and luxury.
He married into wealth. He bought estates and castles in Bohemia and Silesia. Those lands offered more refinement than damp, windy Mitau. As a result, Peter spent much of his time away from Courland. Governors handled many affairs in his absence.
Yet Peter still left behind one powerful symbol of sovereignty: the 1780 Courland thaler.
[IMAGE PLACEHOLDER: Obverse and reverse of the 1780 Peter Biron Courland thaler]
The 1780 Courland Thaler
In 1780, the Mitau mint struck a silver thaler bearing Peter Biron’s portrait. This coin stands as one of the last major numismatic statements of Courland’s independence.
The obverse shows Peter facing right. His wig ties at the back with a ribbon. Around the portrait appears the Latin legend:
D. G. PETRUS IN LIV. CURL. ET SEMGAL. DUX
The phrase means, “By the grace of God, Peter, Duke in Livonia, Courland and Semigallia.”
The reverse shows two heraldic shields beneath a single ducal crown. One shield bears a horseman with a raised sword, the emblem associated with Courland. The other shows an eagle, the emblem of Semigallia.
The reverse legend reads:
MON. NOVA ARG. DUC. CURL. AD NORMAM TAL. ALB. 1780
This translates to, “New silver coin of the Duchy of Courland, according to the standard of the Albert thaler.”
Why Collectors Watch This Coin
The 1780 Courland thaler attracts attention for several reasons.
First, it represents a one-year type. Second, it links directly to Peter Biron, the last Duke of Courland. Third, it marks a fragile claim to sovereignty at a time when Russia already dominated the region.
Major references list the coin as KM 32, Davenport 1624, and Kopicki 4104. Auction catalogues regularly describe the type as rare. Kopicki listings assign it an R2 rarity level. The submitted article also notes an R1 rarity listing in the Hutten-Czapski tradition.
Exact mintage figures remain unknown. Courland’s coin registers from this period do not appear to survive. Therefore, collectors and cataloguers judge rarity through known examples, old collections, and auction appearances.
The market record supports that view. The coin does not appear constantly. However, it does surface often enough to give collectors a working price history.
In May 2026, Wójcicki sold an XF example for €2,747. On May 26, 2026, Heritage sold an MS61 PCGS example for $5,124. A Leipziger Münzhandlung Heidrun Höhn listing from the same period carried a €750 estimate for a fast vorzüglich example.
Together, those results show strong demand across grade levels.
A Coin Struck Before the End
The thaler’s deeper value comes from its historical moment.
By 1780, Courland still had a duke. It still had arms, titles, and ceremonies. It still struck a coin that spoke in the language of sovereignty. Yet the duchy’s future had already narrowed.
Russia had grown too strong. Poland-Lithuania had grown too weak. Courland stood between them.
In 1795, during the Third Partition of the Polish-Lithuanian Commonwealth, Peter Biron signed away his rights to Catherine II. The Duchy of Courland and Semigallia ceased to exist. Russia absorbed it as the Courland Governorate.
Mitau remained the administrative center. The governorate stayed within the Russian imperial system until World War I. In 1915, German troops occupied Courland. After the Russian Revolution and the collapse of imperial authority, the old governorate system disappeared.
Peter Biron’s Final Years
Peter Biron did not return to the Baltic as a ruler. In exchange for his abdication, he received major compensation from Russia. He spent his final years on estates in Silesia and Bohemia, including lands in what is now Poland and Czechia.
He had lived as a duke, collector, patron, and absentee ruler. But history remembers him most clearly as the last Duke of Courland.
His 1780 thaler captures that identity in silver. It shows a man who still carried a ducal title. It also shows a state that stood on the edge of disappearance.
That tension gives the coin its lasting force. It is more than a Baltic crown-sized silver coin. It is the portrait of a duchy just before empire swallowed it.
