All 1967 general circulation British Pennies were made from bronze. If you have a silver Penny, it will be because somebody has plated it.
Alternatively, the British Maundy Penny is a very much smaller coin than the traditional Penny and is made from sterling silver.
If by a "silver penny" you mean one of the 1943 steel cents, then in mint condition it's worth a dollar or two. If you mean some other date, then it's silver plated and has no collector value. And your 1967 penny has been altered -- no added value.
No, there is no silver in a 1817 US penny.
US pennies have never been made of silver.
There is no such thing as a U.S. silver penny.
From 1860 to 1967, the British bronze Penny was 30.81 mm in diameter.
Neither U.S. nor British pennies were made of silver. Your coin is almost certainly plated, which would mean it's only worth face value.
Two a Penny was created in 1967.
Penny Streeter was born in 1967.
There was never a silver Indian Head penny.
No such thing as a 94 silver penny.
1cent
The last Australian Penny was minted in 1964.