There were no British Pennies minted from 1955 to 1960 inclusive.
There is no documentary evidence of any Australian or New Zealand 1957 Pennies being struck on only one side.
All modern Canadian "pennies" are one-cent coins. The two names are synonyms. A "one cent penny" is like saying "a 1000-gram kilo".
Please see the Related Question for values.
One cent
one cent
one cent
One cent.
On average, value is 2 to 8 cents...not much at all,(even though it is a wheat penny...)
One cent. That is it.
It is worth one cent.
one cent. OR $.01
One cent
One cent, it's only a penny
Value is one cent, or face value.
It's worth exactly one cent.