In 1940 through 1946, half crowns weighed 14.138 grams and were 50% silver - they thus contained 0.2273 troy ounces of silver. In 1947, the half crown (and all other "silver" British Coins) were changed to cupro-nickel, and thus contain no silver at all.
Really depends on the date and condition. British half-crowns before 1947 are silver and worth substantially more than the ones dated 1947 and later. The ones before 1920 are sterling silver, worth more than the 50% silver ones of 1920-1946. But post a date if you want an accurate evaluation.
It depends on the year. Up through 1919, it was sterling silver (92.5% silver), then in 1920 it was reduced to 50/50 silver and copper, and changed again in 1947 to a blend of copper and nickel, with all silver removed.
The 1950 Half Crown of Georgius VI is not made of silver, but of cupro-nickel. 50% silver Hlaf Crowns were issued until 1946. Source: Wikipedia
The last year British sixpences, shillings, florins, and half crowns were made with silver was 1946.
half (50%)1 Crown - George V1935Commemorative: Silver JubileeSilver (.500) - 28.28 g - ø 38.61 mm
A silver bowl with a half moon crown marking and the number 800 on the bottom means that the silver bowl was made in Germany. It is hard to say when the piece was made, but many pieces of this type were made in Germany just before WWII.
It depends on the condition, but if circulated the coin sells for scrap silver (it is 50% silver) about $8 at the time of writing.
The half-crown and crown are obsolete British coins. Under the old pre-decimal system, one crown was worth five shillings, and the half-crown was worth half that. At twenty shillings to the pound, the crown was 1/4 and the half was 1/8 of a pound. Or, the crown was 60 pence and the half was 30 pence.
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There were many different English gold coins produced during this period. Angel Half-angel or Angelet Treble-sovereign Double-sovereign Sovereign Ryal George-noble Half-George-noble Crown of the Rose Crown of the Double-Rose Halfcrown Quarter-angel Crown Half-sovereign Fine Sovereign Half Pound Rose-ryal Spur ryal Unite Double-crown Britain crown Thistle crown Laurel Half-laurel Quarter-laurel All of these gold coins were issued at different times for different Kings and Queens, coins of the same name often changing their face value from time to time.
Post-reform coinage like the half crown you are mentioning are pretty common and so its unlikely to be faked. If you are concerned about it being fake, weigh it. It should weigh about 14.1 grams.
British silver coins changed their metallic composition, and therefore their weight in 1919/1920 and again in 1947. The weights specified refer to the weight of the coin at the time of minting. Due to wear and tear, the weight of a circulated coin may be significantly less. Quintuple Sovereign (22 carat gold)(1937 only) - 40 grams Double Sovereign (22 carat gold)(1937 only) - 16 grams Sovereign (22 carat gold) - 7.988 grams Half-Sovereign (22 carat gold)(1923, 1925, 1926 & 1937 only) - 3.99 grams Crown (50% silver)(1927-1936) - 28.4 grams Crown (50% silver)(1937) - 28.2 grams Halfcrown (sterling silver)(1919) - 14.14 grams Halfcrown (50% silver)(1920-1946) - 14.14 grams Florin (sterling silver)(1919) - 11.3 grams Florin (50% silver)(1920-1936) - 11.3 grams Florin (50% silver)(1937-1946) - 11.33 grams Shilling (sterling silver)(1919) - 5.65 grams Shilling (50% silver)(1920-1936) - 5.65 grams Shilling (50% silver)(1937-1946) - 5.61 grams Sixpence (sterling silver)(1919-1920) - 3.01 grams Sixpence (50% silver)(1920-1936) - 2.876 grams Sixpence (50% silver)(1937-1946) - 2.827 grams Threepence (sterling silver)(1919-1920) - 1.414 grams Threepence (50% silver)(1937-1945) - 1.414 grams Threepence (nickel-brass - 12 sided)(1937-1967) - 6.8 grams Penny - (bronze)(1919-1936) - 9.45 grams Penny - (bronze)(1937-1951) - 9.442 grams Halfpenny - (bronze)(1919-1936) - 5.658 grams Halfpenny - (bronze)(1937-1952) - 5.7 grams Farthing - (bronze)(1919-1936) - 2.821 grams Farthing - (bronze)(1937-1952) - 2.838 grams