With over 43,000 objects, the coins and medals of the Landesmuseum Hannover tell the story of Lower Saxony and Hanover from the Middle Ages to modern times. The historical focus of the collection is on coins related to the personal union of Great Britain and Hanover, 1714 to 1837. During this period, the kings of Hanover ruled Great Britain, and the power of the House of the Welf dating back to the 8th century increased greatly. Georg Ludwig was both King of Great Britain and Elector of Hanover. This poster explores changes in the coinage caused by the personal union. It also shows how medals were used to represent the new power of the Welf dynasty. In addition to examining the iconographic and economic changes from the numismatic perspective, the poster will show the concept used by the Landesmuseum Hannover in presenting these medals.