A particularly nice one might sell for a dollar.
The British New Penny coin was first issued in 1971.
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.
SIMPLE ANSWER: No US coin dated 1965, 1966 or 1967 will have a mintmark, it's just a penny.
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.
Penny - British decimal coin - was created in 1971.
Such a coin does not exist. The last British Halfcrown coin minted for circulation was minted in 1967. The last British Halfcrown Proof coin was minted in 1970.
No. All British Pennies from 1860 to 1967 were made from bronze. If you have a gold One Penny coin, it would be because somebody has gold plated it.
Please post a new question noting whether it's an American cent or a British penny.
The British 1967 bronze Penny would be one of the most readily available predecimal coins ever minted. Any coin dealer would probably have dozens of them.
A coin collector who had one missing from his collection would probably buy one. The British 1967 Penny is the last Penny to be minted prior to the introduction of decimal currency in Britain.
The bright appearance of a bronze British Penny is frequently mistaken for gold by some. If indeed it is gold plated, the thin layer of gold would not add much to the coin which normally weigh 9.45 grams.
The face value of an Eire 1 penny coin is 1 penny. It was equal to 1/100 of an Irish pound before the euro.