The 1951 British Crown is 38.5 mm in diameter.
There was no 1955 British Crown (Five Shillings) minted. You possibly refer to the 1953 "Coronation" Crown.
Although it is geographically one of the British Isles and is politically a crown dependency of the British crown, it is not British. It is not part of the United Kingdom.Although it is geographically one of the British Isles and is politically a crown dependency of the British crown, it is not British. It is not part of the United Kingdom.Although it is geographically one of the British Isles and is politically a crown dependency of the British crown, it is not British. It is not part of the United Kingdom.Although it is geographically one of the British Isles and is politically a crown dependency of the British crown, it is not British. It is not part of the United Kingdom.Although it is geographically one of the British Isles and is politically a crown dependency of the British crown, it is not British. It is not part of the United Kingdom.Although it is geographically one of the British Isles and is politically a crown dependency of the British crown, it is not British. It is not part of the United Kingdom.Although it is geographically one of the British Isles and is politically a crown dependency of the British crown, it is not British. It is not part of the United Kingdom.Although it is geographically one of the British Isles and is politically a crown dependency of the British crown, it is not British. It is not part of the United Kingdom.Although it is geographically one of the British Isles and is politically a crown dependency of the British crown, it is not British. It is not part of the United Kingdom.Although it is geographically one of the British Isles and is politically a crown dependency of the British crown, it is not British. It is not part of the United Kingdom.Although it is geographically one of the British Isles and is politically a crown dependency of the British crown, it is not British. It is not part of the United Kingdom.
There was no "Festival of Britain" Florin minted, you possibly refer to the "Festival of Britain" Crown (Five Shillings). See "What is the value of a 1951 British Crown - Festival of Britain".
This is a commemorative British Crown (5 shillings) for the 1951 Festival of Britain. The edge reads in Latin MDCCCLI CIVIUM INDUSTRIA FLORET CIVITAS MCMLI (1851 By the industry of its people the State flourishes 1951).
There was no 1946 British Crown minted.
No, the British Crown does not rule France.
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A British 1951 cupro-nickel Crown (Five Shillings)(George VI) - Festival of Britain (proof like), uncirculated and in absolute mint condition could fetch up to £15 GBP. If it has been circulated but still in good condition, it might fetch up to £5 GBP. A British 1951 cupro-nickel Crown (Five Shillings)(George VI) - Festival of Britain (Frosted "VIP" Proof), uncirculated and in absolute mint condition could fetch up to £675 GBP. A British 1951 cupro-nickel Crown (Five Shillings)(George VI) - Festival of Britain (Matt Proof FDC), uncirculated and in absolute mint condition could fetch up to £4,000 GBP. A British 1951 cupro-nickel Crown (Five Shillings)(George VI) - Festival of Britain (Plain edge - Proof FDC), uncirculated and in absolute mint condition could fetch up to £1,000 GBP. The edge inscription reads "MDCCCLI CIVIUM INDUSTRIA FLORET CIVITAS MCMLI" which is Latin meaning "1851 By the industry of its people the State flourishes 1951". The values quoted are the best possible for the best specimens in their grades, but may be significantly lower due to varying demand for the coin and the prevailing economic climate. A reputable coin dealer will be able to give a more accurate valuation based on inspection of the coin.
There was no 1908 British Crown (Five Shilling) minted.
There was no British Crown minted from 1938 to 1950 inclusive.
There was no 1923 British Crown (Five Shillings) minted.
There was no 1956 British Crown (Five Shillings) minted.