It contains exactly 0% silver.
There is no silver in this coin. Despite its silver appearance, it is actually composed of nickel.
Assuming the coin is from France, none. These coins were struck in copper-nickel.
You didn't give the denomination, but I'm assuming you mean a 1952 Belgium 1 Franc coin. If you've got one of these, it is copper-nickel and contains no silver.
A 1969 1 Franc coin is worth about $0.22.
Most likely not. You did not specify a country of origin, but most countries completely ended circulating silver coinage by the late 1960s with a few exceptions of coins with very high face values.
$5
No. Copper-nickel. These circulated regularly until France adopted the euro in 2002. If your coin is from circulation it's worth less than a quarter. Correction: French francs from 1960-2000 are .999 nickel and as of 8/8/2012, nickel is trading at just over double the price of copper per pound, of which a U.S. quarter is made, so the melt value of a 1960 franc is over double the value of a quarter.
The value of a 1924 1 Franc depends on the condition of the coin. A worn coin is valued at less than a dollar while a fully uncirculated coin is valued at 5 US dollars.
Copper-nickel. It was an ordinary circulation coin until France switched to euros in 2002. Worth a bit less than a dime.
Since 2002 France has used the euro; euro coins don't contain any silver. From the end of WWII to 2002, a few franc-denominated coins contained silver: 5 FF, 83.5% silver, 1960 to 1970 10 FF, 90% silver, 1965 to 1974 50 FF, 90% silver, 1974 to 1980 100 FF, 90% silver, 1982 to 2002 (very limited circulation)
The coin you are referring to is from Switzerland ("Confoederatio Helvetica" is Latin for "Swiss Confederation"), you haven't identified the denomination or the condition of the coin. Switzerland produced coins for 1, 2, 5, 10 and 20 Rappen in 1938, but not the usual 1/2 Franc, Franc, 2 Franc and 5 Franc coins (although very valuable patterns of the 1 and 2 Franc coins were produced). Depending on denomination and condition of your coin, it could be worth between a few cents and perhaps $20.