his work at the mint was substandard. His deficiencies at the mint were brought to light by Georg Stiernhielm in 1662, and the next year, his smelting methods were strongly criticized by the Board of Mines where its chairman, Erik Fleming, accused Grill of defaming him. In 1663, Grill was demoted to handling the weighing of precious metals and other "minor items and tasks", while Jöran Low became the new riksguardie. in 1661 he introduced credit paper (Kreditivsedlar), the first European banknotes with copper as collateral. The lack of silver, the cumbersome size and weight of copper plate money eventually prompted Sweden to become the first country in Europe to issue such notes. In 1624 Sweden had introduced a copper standard; in 1664 Sweden reintroduced the silver standard. Anthoni Grill (II) Anthoni Grill (1639–1703) was the son of Anthoni Grill (I) and Catharina Staets. In 1664 he married Anna van Slingeland in Stockholm. Following in his father's footsteps, he was appointed riksguardie in 1667, checking the quality of the silver. Grill had numerous reform proposals for the mining industry at Sala Silver Mine, and Stora Kopparberget, which produced two thirds of the world's copper. His brother Baltasar, also worked at the Swedish Mint but as a skedare (lit. "spooner" meaning gold parter), and took part in Kungsholmen's glassworks in 1682. In 1694 Anthoni became one of the shareholders of the Big City shipyard in Stockholm. He participated in the gilding of the newly built northern wing of the Royal Palace. After being widowed, Anna van Slingeland (−1714) moved from Gamla stan to Amsterdam, where several of her children lived. In 1716 Sophia Grill remarried – on a prenuptial agreement – Nikolaas Kohl, a tradesman on the Baltic, originating from Arensborg. On 10 August 1734, Kohl bought The Conspiracy of Claudius Civilis, for 60 guilders. Originally , it was the largest work Rembrandt painted. The couple had a small estate near Zwammerdam, where Sophia died in August 1766. Anthoni Grill (III) Anthoni Grill (1664–1727) returned to Amsterdam in 1686 and married his cousin Elisabeth Grill in 1693. He settled as silversmith in Kalverstraat, where the Grills owned a shop almost next to a hidden church. In December 1693 he was admitted as a private assayer. Between 1702 and 1742 the Grills imported copper plates (c.q. plate money) from Sweden. As Europe's copper supplier, Sweden exported copper and more so when the