All British "silver" coins from 1947 onwards were made from a copper nickel alloy.
A Sixpence was a small predecimal British coin. Half a Sixpence was a Threepence, an even smaller predecimal British coin.
The British Sixpence was known as a "Tanner". The Australian Sixpence was known as a "Zack".
The Sixpence was not introduced into the currency until about 1550.
All pre-1920 British Sixpences were made from sterling silver (92.5% silver content).
Good luck if you have one, but the last British Sixpence was minted in 1967.
GRI (not "GRJ") on the reverse of the 1937 to 1946 British Sixpence is an abbreviation for George Rex Imperator.
A British Sixpence in 1805 has the purchasing power of about £1.40 GBP today.
The value of a 1949 Sixpence coin depends on its condition, rarity, and demand from collectors. In general, a 1949 Sixpence in average circulated condition may be worth a few dollars, while one in better condition or with unique characteristics could be worth more to collectors. It's recommended to have the coin evaluated by a professional coin dealer to determine its exact value.
A British Sixpence in 1885 had the purchasing power of about £1.80 GBP today.
Both the Farthing and the Sixpence are part of the old redundant British currency. The Farthing was a quarter of a penny, therefore there were 24 Farthings in a Sixpence.
It would depend on which "Pence" you refer to. The British Penny and Halfpenny were made from bronze from 1860 to their last minting in 1967. The British Threepence and Sixpence were made from sterling silver from 1816 to 1920, and from 1920 to 1946, they were made from 50% silver.
The British Sixpence has never been issued as a bronze coin. The British Sixpence was first issued around 1551 and has been made from silver of varying quality until 1947. From 1817 to 1920 it was made from sterling silver. From 1920 to 1946 it was made from 50% silver and, from 1947 until its last minting in 1967, it was made from a copper nickel alloy. Depending on where and how the coin has been stored, a discolouration may have developed on the coin giving it a dirty gold, or perhaps a brownish colour.