About 5.5 billion were minted so they'll never be rare. Most uncirculated ones only sell for about a half dollar as of 01/2010. Even in the highest condition (MS 65) they retail for only about $2.50.
The only truly rare 1971 cent is a proof version (S mint mark and in its original holder) with a doubled obverse.
The coin's still in circulation and is only face value.
1 US cent has the same value the world over! i.e. 1 US cent
1856 3 cent coin value
About 1 cent.
It's still worth one cent US.
Average value is $1.00 for a proof 1971-S lincoln cent.
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 US Mint did not produce platinmum half dollars in 1971. Please examine your coin to determine its national origin and then post a new question giving more detail about this coin.
The coin has face value only.
It's still worth one cent.