A British 1929 Crown (Five Shillings), uncirculated and in absolute mint condition could fetch up to £425 GBP. If it has been circulated but still in good condition, it might fetch anything from £85 to £250 GBP. A reputable coin dealer will be able to give a more accurate valuation.
There was no 1946 British Crown minted.
There was no 1908 British Crown (Five Shilling) minted.
There was no 1956 British Crown (Five Shillings) minted.
There was no 1923 British Crown (Five Shillings) minted.
There was no British Crown minted from 1938 to 1950 inclusive.
There was no British 1907 Crown (Five Shillings) minted.
There was no British Crown minted from 1903 to 1926 inclusive.
There was no British Crown minted from 1848 to 1886 inclusive.
There was no 1963 British Crown (Five Shillings) minted.
There was no British 1886 Crown (Five Shillings) coin minted.
There was no British 1846 Crown (Five Shillings) coin issued.
There were no British Crown (Five Shilling) coins issued from 1903 to 1926.