1877 is one of the "key" dates for Indian cents. Retail values range from about $750 to $2500 depending on condition.
If you have one you should spend the bucks to have it certified by one of the major grading agencies such as PNG or PCGS.
The US only issued 20¢ coins from 1875 to 1877. If you mean 50 cent piece, please see the Related Question.
1 US cent has the same value the world over! i.e. 1 US cent
1856 3 cent coin value
1877 20¢ pieces were only struck as proof coins so you should have your coin authenticated by an expert to make sure it's genuine. As of 02/2015 retail values range from $1800 to $26,000.
About 1 cent.
It's still worth one cent US.
A 1997 US one cent piece? is a Lincoln cent and only face value.
It's worth exactly one cent.
A 1942 US Wheat cent is common, average value is 3 cents.
The coin has face value only.
It's still worth one cent.
One cent. That is it.