Middle Francia is the kingdom placed under the direct control of Emperor Lothair I after the partition of the Carolingian Empire at the Treaty of Verdun in 843 by the three sons of Louis the Pious, who died three years earlier. It covers a territorial strip stretching from the Frisian coast to the Mediterranean Sea, passing through the Rhineland with Aachen, most of Burgundy, Provence, and also encompassing northern Italy to Rome. Caught between the West Francia of Charles the Bald and the East Francia of Louis the German, its existence was ephemeral: in September 855, shortly before his death, Lothair I divided Middle Francia between his three sons by the Treaty of Prüm: Louis the Younger received the Kingdom of Italy, Lothair II received the north of Middle Francia which would henceforth be called Lotharingia, Charles received the kingdom of Provence also called Lower Burgundy. The monetary production of Lothair I took place throughout the territory, from Dorestad to Pavia via Metz, Verdun or Aachen, but without real harmonization (there are many spelling and stylistic variants) unlike the coinage of his father Louis the Pious or even of his brother Charles the Bald.
The Numista referee for coins of this issuer is Compendium.
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