Veitel Heine Ephraim, 1703 – 16 May 1775 in Berlin) was jeweller to the Prussian Court, an silk entrepreneur in Potsdam, the chairman of the Jewish congregation in Berlin/Prussia, and since 1756 Mintmaster in Saxony and from 1758 also in Prussia.
During the Seven Years' War Frederick the Great devalued the Prussian coin five times in order to finance the war; debased coins were produced with the help from Ephraim and Daniel Itzig, and spread outside Prussia: in Saxony, Poland, and Kurland.
Ephraim and his companion Itzig became infamous for adding copper, up to 70%, into the fake coins, known as Ephraimiten.
The coin fraud of the entrepreneurs became an existential element of war financing.
Heinrich Carl von Schimmelmann, Johann Ernst Gotzkowsky and Leendert Pieter de Neufville rivalled Ephraim's exchange business.