A 1912 is worth lots more than a 1935 : until 1928 they weighed 25 grams, then they were made smaller - 15 grams. Both are 0.835 purity (83.5% silver) - so the old ones contain 0.7234 troy ounces of silver; newer ones, only 0.4027 oz silver. To find out how much 1 ounce of silver is worth right now,
How much an 1883 Confoederatio Helvetica Rappen is worth depends on its condition. The typical value of such a coin is 12 US dollars.
4 dollars
10~20$
"Confoederatio Helvetica" is the Latin name for Switzerland. Your coin is not unusual and has an exchange value of about $1.10 as of 09/2012
The value of this Swiss coin depends on its circulation condition. It can range in value from 5 dollars to 30 dollars.
It is likely worth a good deal, but that depends on the condition of the coin, and whether or not its authenticity can be proven.
less than a dollar
You have a coin from Switzerland (The Helvetian Confederation, to the Swiss). Anything that new is almost certainly only worth face value. You didn't state the coin's denomination - an important piece of information - but exchange rates in early 2010 have been in the range of CHF 1 = US$ 0.90
One of these sold in an internet auction for $12.
You didn't indicate the coin's date, but assuming it's a recent coin you Swiss 5-franc piece only worth its exchange value of about $4.30 U.S.
78,000The value
How much is a 1911 quarter worth