The radius of a coin with diameter of 45 mm is : 45/2 = 22.5mm The circumference of a coin with diameter of 45 mm is 45*pi = 141,372mm rounded to 3 decimal places
The current British 5 Pence coin is 18 mm in diameter. The 25 Pence coin is 38.5 mm in diameter, more than twice the diameter.
The 5 cent coin is smaller in diameter than the Two Dollar coin. The Australian 5 cent coin is 19.41 mm in diameter. The Australian Two Dollar coin is 20.62 mm in diameter.
25 mm
The British Sixpence is 19 mm in diameter.
US silver dollar coins from 1873 to1978 are 38.1 mm in diameter. In 1979 they were reduced to 26.5 mm in diameter.
Yes, the 10 cent coin is smaller. The Australian 10 cent coin is 23.60 mm in diameter. The Australian 20 cent coin is 28.52 mm in diameter.
Your coin is either a copper Penny, a Halfpenny or a Farthing with George IV on the front and a seated Britannia on the reverse. The Farthing is 22 mm in diameter. The Halfpenny is 28 mm in diameter. The Penny is 34 mm in diameter.
The diameter of a quarter is 24.26 mm (0.955 in).
Any value would depend on the denomination and condition of the coin. The following 1893 British coins are made from sterling silver. Crown (Five Shillings) - 38.6 mm in diameter Halfcrown (Two Shillings and Sixpence) - 32 mm in diameter Florin (Two Shillings) - 28.5 mm in diameter Shilling - 23.5 mm in diameter Sixpence - 19 mm in diameter Threepence - 16 mm in diameter Please decide which one you have and submit a new question.
No coin that I know of really matches the specifications you have listed. There is the British Sovereign coin, which is gold and was struck in 1893 but only has a diameter of 22.05 MM. There is also the "double sovereign" but that has a diameter of 28.40 MM. So, without knowing exactly what your coin is, its very hard to estimate a value of it. But somewhere from $300-$800 depending on what your coin actually is.
Such a coin does not exist. Edward VII had not been born in 1802, and became king in 1901. For the sake of identifying your coin, and assuming you refer to gold Sovereign coinage - the Quintuple Sovereign (Five Pound) is 36 mm in diameter the Double Sovereign is 28.4 mm in diameter the Sovereign is 22.05 mm in diameter the Half-Sovereign is 19.3 mm in diameter. All four coins show St.George slaying a dragon on the reverse.