Nous sommes en présence de l'essai en bronze-aluminium au type adopté qui sera frappé en or en 1929, 1932, 1933, 1934, 1935 et 1936. Les quatre premières années sont des pré-séries sans le mot essai et les deux dernières années furent frappées à 13.
aluminium bronze centre in stainless steel ring - eg Australia 5 dollar (1996 Bradman)
aluminium bronze centre in cupro-nickel ring - eg New Zealand 50 cent (1994) ...
Aluminium bronze one dollar coins issued by the Royal Australian Mint from 1993 began to feature a mintmark. Initially the mintmark was a letter C, S or M and later B, E, A, and TV mint marks appeared.
Aluminum (aluminium to the Brits and most of the rest of the world) typically tones a dull, unattractive gray.
Alloys of aluminium
Al-Li (Lithium) Alumel (Nickel) Duralumin (copper) Magnox (magnesium oxide}
..... Click the link for more information. metallurgy ...
Common mirrors are backed with aluminium.
Silver has been coined to produce money since 700 BC by the Lydians, in the form of electrum. Later, silver was refined and coined in its pure form.
In 1907 a coinage in cupro-nickel and aluminium consisting of a penny and tenthpenny was issued for the territory of Nigeria.
A non-precious metal or alloy which has a low intrinsic value. Examples are copper, nickel, brass, bronze and aluminium.
Beading
A continuous series of small dots or denticles found either around the rim of a coin or between the legend and field.
7/10" across, this threepenny token is one of three types known for the Liverpool camp. Not intended for long-term use, it was struck in aluminium. Very few have survived and most of those are badly worn. This specimen would grade VF or perhaps gVF.
Base Metal - A non-precious metal i.e. not silver, gold, platinum, or palladium. Usually copper or bronze but today it also includes aluminium, stainless steel and cupro-nickel.
The Hua Hsing Commercial Bank issued coins (dated 1940) in Shanghai in 1941. These were bronze 1 fen and cupronickel 10 fen. The Federal Reserve Bank issued aluminium 1 and 5 fen and 1 jiao between 1941 and 1943 from Beijing.
The Maltese Pound (renamed Maltese lira in 1983) was retained as the currency unit and the first set of decimal coins was issued in eight denominations: 50c, 10c, 5c, 2c in copper nickel; 1c in bronze; and 5m, 3m, and 2m in aluminium.
4 old pence was less of a problem as inflation had made its purchasing power insignificant. As a temporary measure a half new penny was introduced, but as will be seen this had a short life. There was even a pattern quarter penny made in aluminium, ...
 See also: Silver, Gold, Coin, Coinage, Copper
|
