Gibraltar has produced a "Crown" coin in most years since 1967. They are produced as a commemorative coin and often more than one type in each year. They are made variously from the usual cupro-nickel alloy, silver and gold, and usually as a Proof coin. The value of any Crown would be dependent on the year, condition, whether of not the coin is Proof, and what metal it is made from.
Good luck if you have one, but the last British Sixpence was minted in 1967.
i $A
what is the 1981 royal wedding commemorative crown worth
How much is a 1967 Buick Wildcat Sedan worth ? 440 752 9193
i have a 1967 francaise 10f how much is it worth
how much is a diez centavos 1967 M worth
500 billion
$10
It's currently worth about $2.50 for the silver.
$300
600