The 5 New Pence from Great Britain was made in copper-nickel (a silver colored coin) from 1968 to 1981. After that, the composition changed and the word 'new' was dropped. The coin is very common and in circulated condition is often found in a coin dealer's 'junk' box for 25 cents. Catalog value is about that. Very common coin and still legal tender in the UK, where it has the purchasing power of about 8 cents US.
Congratulation, you've made a 200% return. It worth 2 pence.
I have an Elizabeth II D G REG F D 1971 new pence. Under the words new pence and the symbol it has a 5. I looked them up, but they were all bronze. This one is silver in color. I was wondering how much this coin would be worth in US dollars.