You are asking about a 20 Rappen coin from Switzerland (KM#29a). The coin weighs 4.200 grams, measures 21 mm in diameter, and is made of Copper-Nickel. The obverse (front) bears an image of a bust of Helvetia (the personification of Switzerland, much like "Uncle Sam" is the personification of the United States) facing right, with the words Confoederatio Helvetica (Latin for the "Swiss Confederation") above and "1962" below. The reverse (Back) has a large "5" within a wreath. 30,145,000 such coins were produced in 1962.
According to the Standard Catalog of World Coins, an example is worth US$0.50 in Extremely Fine condition, US$3.00 in Uncirculated condition, and US$8.00 in Brilliant Uncirculated condition.
20 cents
(about) 78,000
10~20$
How much an 1883 Confoederatio Helvetica Rappen is worth depends on its condition. The typical value of such a coin is 12 US dollars.
A 1968 Confoederatio Helvetica coin 5 francs is worth between 5 and 20 US dollars. The value depends on the condition of the coin.
The value of a helvetica 1913 20 rappen
"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
$1.00 us money
3 bagillion dollars
You have a coin from Switzerland (The Helvetian Confederation, to the Swiss). Anything that new is almost certainly only worth face value. You didn't state the coin's denomination - an important piece of information - but exchange rates in early 2010 have been in the range of CHF 1 = US$ 0.90
20 Swiss Francs.
One of these sold in an internet auction for $12.