If it has been modified (soldered, holed) no. And in any case, if it's a modern (1971 or later) 2p coin, it's only worth face value - that's 4¢ U.S.
The US has never made a one dollar coin with JFK on it. If it is a dollar coin with the date of 1971 the portrait is of Eisenhower. Post new question.
copper-nickel and its worth 2.00$
7.13 grams
1971 dated halves are still in circulation today. The coin is made of copper-nickel, not silver, and is only worth face value.
It's a novelty coin that was not made at the mint and has no collectible value.
2pence
In the search box on your home page, type in Eisenhower dollars and click on images. The coins were made from 1971 to 1978.
Eisenhower Dollars made for circulation only have face value and has no silver.
1 pound 2pence
A 1971, 1 cent coin is worth 1 cent up to couple dollars in mint state condition. A 1971, 1 dollar coin is worth between one dollar, and a couple dollars. I have no idea what coin you are asking about because you didn't clarify.
1971 dated halves are still in circulation today. The coin is made of copper-nickel, not silver, and is only worth face value.