Pictures of a specific coin are difficult to come by. Usually you should be able to find one on eBay, but the picture is withdrawn after the coin is sold. The 1939 Sixpence is almost identical to the 1946 Sixpence shown in the link below.
A Sixpence was a small predecimal British coin. Half a Sixpence was a Threepence, an even smaller predecimal British coin.
Pictures of a specific coin are difficult to come by. Usually you should be able to find one on eBay, but the picture is withdrawn after the coin is sold.
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.
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.
Pictures of a specific coin are difficult to come by. Frequently you should be able to find one on eBay, but the picture is withdrawn after the coin is sold. All British Sixpences issued from 1953 to 1967 inclusive are identical other than for the year.
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.
Not much, a British 1954 sixpence would be worth about 15p or so at the most today unless in exceptionally good shape.