Could you please check the denomination again? The 1-crown denomination was rarely issue during the 20th century, in general only as a commemorative. The only issue date in the vicinity of 1967 was a 1965 crown issued to honor Sir Winston Churchill, who died that year. For a coin in that year, the coin is currently worth 25 pence. Newer crowns (from 1990) are worth £5. They are also known as the £5 coin.
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 1963 British 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 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.