Brass is an alloy of copper (Cu) and zinc (Zn), in proportions which can be varied to achieve different colours and mechanical, electrical, acoustic, and chemical properties, but copper typically has the larger proportion. In use since prehistoric times, it is a substitutional alloy: atoms of the two constituents may replace each other within the same crystal structure.
The Celts or Celtic peoples were a collection of Indo-European peoples in Europe and Anatolia, identified by their use of Celtic languages and other cultural similarities. Major Celtic groups included the Gauls; the Celtiberians and Gallaeci of Iberia; the Britons and Gaels of Britain and Ireland; the Boii; and the Galatians. The relation between ethnicity, language and culture in the Celtic world is unclear and debated; for example over the ways in which the Iron Age people of Britain and Ireland should be called Celts. In current scholarship, 'Celt' primarily refers to 'speakers of Celtic languages' rather than to a single ethnic group.
A coin is a small object, usually round and flat, used primarily as a medium of exchange or legal tender. They are standardized in weight, and produced in large quantities at a mint in order to facilitate trade. They are most often issued by a government. Coins often have images, numerals, or text on them. The faces of coins or medals are sometimes called the obverse and the reverse, referring to the front and back sides, respectively. The obverse of a coin is commonly called heads, because it often depicts the head of a prominent person, and the reverse is known as tails.
The Helvetii, anglicized as Helvetians, were a Celtic tribe or tribal confederation occupying most of the Swiss plateau at the time of their contact with the Roman Republic in the 1st century BC. According to Julius Caesar, the Helvetians were divided into four subgroups or pagi. Of these, Caesar names only the Verbigeni and the Tigurini, while Posidonius mentions the Tigurini and the Tougeni (Τωυγενοί). They feature prominently in the Commentaries on the Gallic War, with their failed migration attempt to southwestern Gaul serving as a catalyst for Caesar's conquest of Gaul.
Electrum is a naturally occurring alloy of gold and silver, with trace amounts of copper and other metals. Its color ranges from pale to bright yellow, depending on the proportions of gold and silver. It has been produced artificially and is also known as "green gold".
The Carnutes or Carnuti, were a Gallic tribe dwelling in an extensive territory between the Sequana (Seine) and the Liger (Loire) rivers during the Iron Age and the Roman period.
The British Iron Age is a conventional name used in the archaeology of Great Britain, referring to the prehistoric and protohistoric phases of the Iron Age culture of the main island and the smaller islands, typically excluding prehistoric Ireland, which had an independent Iron Age culture of its own. The parallel phase of Irish archaeology is termed the Irish Iron Age. The Iron Age is not an archaeological horizon of common artefacts but is rather a locally-diverse cultural phase.
The Oppidum of Manching was a large Celtic proto-urban or city-like settlement at modern-day Manching, near Ingolstadt, in Bavaria, Germany. The Iron Age town was founded in the 3rd century BC and existed until c. 50-30 BC. It reached its largest extent during the late La Tène period, when it had a size of 380 hectares. At that time, 5,000 to 10,000 people lived within its 7.2 km walls. Thus, the Manching oppidum was one of the largest settlements north of the Alps. The ancient name of the site is unknown, but it is assumed that it was the central site of the Celtic Vindelici tribe.
Zürich has been continuously inhabited since Roman times. The vicus of Turicum was established in AD 90, at the site of an existing Gaulish (Helvetic) settlement.
Cast coinage refers to coins made by pouring melted metal into a mold, i.e. casting. It has been used for regular coins, particularly in East Asia, but also other areas on a smaller scale. The method differs from the current mode of coin production, which is done by striking coin blanks that have been cut out of metal sheets. The method has also been used by forgers.
Celtic coinage was minted by the Celts from the late 4th century BC to the mid 1st century AD. Celtic coins were influenced by trade with and the supply of mercenaries to the Greeks, and initially copied Greek designs, especially Macedonian coins from the time of Philip II of Macedon and his son, Alexander the Great. Thus Greek motifs and even letters can be found on various Celtic coins, especially those of southern France.
Group 11, by modern IUPAC numbering, is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), gold (Au), and roentgenium (Rg), although no chemical experiments have yet been carried out to confirm that roentgenium behaves like the heavier homologue to gold. Group 11 is also known as the coinage metals, due to their usage in minting coins—while the rise in metal prices mean that silver and gold are no longer used for circulating currency, remaining in use for bullion, copper remains a common metal in coins to date, either in the form of copper clad coinage or as part of the cupronickel alloy. They were most likely the first three elements discovered. Copper, silver, and gold all occur naturally in elemental form.
Billon is an alloy of a precious metal with a majority base metal content. It is used chiefly for making coins, medals, and token coins.
The Greeks in pre-Roman Gaul have a significant history of settlement, trade, cultural influence, and armed conflict in the Celtic territory of Gaul, starting from the 6th century BC during the Greek Archaic period. Following the founding of the major trading post of Massalia in 600 BC by the Phocaeans at present day Marseille, Massalians had a complex history of interaction with peoples of the region. Large Greek colonies also existed west of the Rhône, particularly at Agde and Béziers, the latter of which both predates, and was larger than, the Marseille colony.
The coinage metals comprise those metallic chemical elements and alloys which have been used to mint coins. Historically, most coinage metals are from the three nonradioactive members of group 11 of the periodic table: copper, silver and gold. Copper is usually augmented with tin or other metals to form bronze. Gold, silver and bronze or copper were the principal coinage metals of the ancient world, the medieval period and into the late modern period when the diversity of coinage metals increased. While coins are primarily made from metal, some non-metallic materials have also been used.
Turicum was a Gallo-Roman settlement at the lower end of Lake Zurich, and precursor of the city of Zürich. It was situated within the Roman province of Gallia Belgica and near the border to the province of Raetia; there was a tax-collecting point for goods traffic on the waterway Walensee–Obersee-Zürichsee–Limmat–Aare–Rhine.
Zürich–Enge Alpenquai is one of the 111 serial sites of the UNESCO World Heritage Site Prehistoric pile dwellings around the Alps, of which 56 are located in Switzerland.
Bürkliplatz is a town square in Zürich, Switzerland. It is named after Arnold Bürkli, and is one of nodal points of the road and public transportation, and of the lake shore promenades that were built between 1881 and 1887. The tree-shaded square between Bahnhofstrasse and Fraumünsterstrasse is called Stadthausanlage.
Lindenhof is the present name of the large fortified settlement, or oppidum, likely founded by the Helvetii on the Lindenhof hill on the western shore of the Limmat in Zürich, Switzerland.
The Celtic currency of Britain were the various items and coins used as currency between approximately 200 BC and AD 60. The earliest currency consisted of various forms of iron bars. Coins were first imported in large numbers in around 150 BC and domestic minting began around 100BC. Coin production was largely ended by the Roman conquest of Britain, first by the Claudian invasion of AD 43 and later by the Defeat of Boudica in AD 60 or 61. Cast coins may have been produced for a few more years around Hengistbury Head. Exact dating of coins often changes in the light of new research.
