Five. A sixpence (when they were in use, up to about 1970) was worth half a shilling. A crown = five shilling, so a half-crown = 2 and a half shillings.
The Halfcrown was equal to Two Shillings and Sixpence or Thirty Pence in the old currency. A Halfcrown was one-eighth of an old pre-decimal Pound. At the conversion to decimal currency, the Halfcrown became the equivalent of 12.5 New Pence or one-eighth of a "decimal" Pound.
British 50% silver Halfcrown coins minted from 1920 to 1952 inclusive weigh 14.14 grams. 1 ounce equals about 28.35 grams, so two Halfcrown coins would slightly less than one ounce.
Please ask one question at a time. The answers to all of your Halfcrown questions already exist on WA. Use the format - "What is the value of a 1953 British Halfcrown?"
For reasons known only to the Royal Mint, there was only one 1952 British Halfcrown coin minted.
None. Australia has never issued a Halfcrown coin. The only two years an Australian One Crown coin was issued were in 1937 and 1938. The coins were very unpopular due to size and weight and were discontinued.
In the old coinage system, there were two tanners (or sixpences) to one shilling. A guinea was the equivalent of 1 pound & 1 shilling. There were 20 shillings in a pound. Therefore there were 42 tanners in a guinea.
There were 7 different British Sixpences issued during the Third and Fourth Issues (1561-77) of the reign of Queen Elizabeth I. Only one can be definitely put at 1562. There is another without a date.
Assuming you refer to 20th century British general circulation Halfcrown coins, none are currently rated as rare. The 1927, 1937 and 1950 "Matt Proof FDC" coins are considered to be of the highest rarity. The 1952 coin is unique, there was only one made.
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 Usually you should be able to find one on eBay, but the picture is withdrawn after the coin is sold.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 last British Halfcrown coin made from sterling silver was minted in 1919, they were subsequently debased to 50% silver due to the huge increases in the price of silver after World War 1. The last British general circulation coin of any denomination made from 50% silver was minted in 1946. All subsequent "silver" coins were made from a copper-nickel alloy. Britain needed the silver to pay off war loans made by the USA. The trend away from silver coinage was a world wide one during the 20th century.
The only country minting Halfcrown coins in 1877 was Britain. Normally, there should only be a small "WW" below Queen Victoria's head, which is the designers initials. Coins of this design are noted as having "inferior workmanship". The was a practice at one stage for the Womens Suffrage movement to stamp a large W on coins to publicise their cause.
because there were 83 million cents minted in 1923 but only 7 million in 1922. In addition, a few of the cents minted in 1922 are missing the mintmark. This is one of the most popular error coins in existence - scarce enough that you are unlikely to ever own one yet common enough that you can always hope to.