If it says "Ley 999" somewhere over its face, it should have an ounce of 99.9% pure silver.
1964 - $10 or so for the silver content (90% silver) 1965-1970 - $4.50 or so for the silver content (40% silver) 1971-present, 50 cents unless in mint packaging.
900 silver coin
If the coin is an "S" mintmarked silver proof coin, it's 90% silver.
There is no silver content in any general circulation British coin from 1947 onwards. The 10 Pence coin is made from 75% copper and 25% nickel.
90%
The silver content of the 1981 British Royal Wedding commemorative general circulation crown is zero. It is a cupro-nickel coin. No British general circulation coin has had any silver content since 1946. The 1981 silver Proof FDC Crown coin which was sold in a case, has a 92.5% silver content.
82.5% silver
The last year for circulating silver U.S. dimes and quarters was 1964, while half dollars continued with a reduced silver content until 1971. Meanwhile in Canada, their dollars and halves were silver up through 1967, with quarters and dimes at a reduced content into 1968.
No S.B.A. coin was struck in silver, so the silver content is zero. All are copper-nickel.
Unless the coin is in a special holder that identifies it as a 40%-silver collector's coin, it's made of copper-nickel rather than silver and is only worth $1. As of 03/2011 a 40%-silver Ike might sell for at least $12 based on its silver content and the fact that it would be an uncirculated coin if it's still in its original holder
About $3.25 for its silver content.
silver on the outside/ small gold coin inside