The Conventionstaler was a standard silver coin of the Holy Roman Empire. It was introduced in 1754 and contained one tenth of a Cologne mark of silver (~23.39 grams). It was used as a standard in most of the Empire, with a variety of subdivisions being used, including the Reichsthaler, Gulden, Groschen, Pfennig and Heller. During the early 19th century, it was superseded by a Thaler containing one fourteenth of a Cologne mark of silver.
General Name, Symbol, Number silver, Ag, 47 Chemical series transition metals Group, Period, Block 11, 5, d Appearance lustrous white metal Atomic mass 107. ... The Holy Roman Empire of the German Nation (German: Heiliges Römisches Reich Deutscher Nation ▶ (help· info), Latin Sacrum Romanum Imperium Nationis Germanicae, see names and designations of the empire) was a political conglomeration of lands in Central Europe in the Middle Ages and the early modern period. ... The Cologne mark was a unit of weight equivalent to 233. ... The gram or gramme, symbol g, is a unit of mass. ... The Reichsthaler began as a subsidiary denomination to the Conventionsthaler, introduced in the Holy Roman Empire in 1754. ... The Gulden originated as a gold coin (hence the name) but has been a common name for a silver or base metal coin for some centuries. ... The groschen was a coin used in various German speaking states. ... The pfennig was a small German coin valued at 1/100 of a Deutsche Mark and other German currencies with the name Mark. ... Heller may mean: Heller (plural: Häller), a defunct unit of money in Central Europe. ... Examples of German and Austrian thalers compared to a US quarter piece The Thaler was a silver coin used throughout Europe for almost four hundred years. ...