The last U.S. 1/2 cent coins were issued in 1857 so anything dated 1980 is either a foreign coin or a fantasy piece. You'll need to provide more information to help determine what you have - any wording on the coin, a description of its images, etc. would be a big help.
It is worth a tenth of a cent (0.2)
It's still worth 50 cents.
Two different U.S. one cent coins are dated 1857. A large cent and a small cent. Post new question with more information.
The last Franklin half dollar was dated 1963.
The coin is still in circulation today and its just 50 cents.
No US two cent coins dated 1819 the first year was 1864. Please look at the coin again
The last large cents were dated 1857. If your coin is dated 1861 it could be a British penny (not a cent), a private token, or a Civil War piece. Please post a new question with more details about its design and size.
A U.S. fifty cent piece dated 1961 is a Franklin half dollar. The coin is not rare, if it shows any wear the value is about $12.00 just for the silver.
A US Indian Head cent dated 1900 is common, coins in average circulated grades sell of $1.00-$3.00
Sorry no US 2 cent coins dated 1863
1980 canadian one cent coin worth?
Half dollars dated 1971 and later are only worth fifty cents. Half dollars dated 1970 were not made for circulation, only for proof and uncirculated sets sold to collectors.