Define "larger sized"
The US made no pennies in 1956 except for the small size wheat pennies which are the same size of the pennies today.
You may be referring to a commonwealth pre-decimal penny. Since the UK didn't issue any pennies bearing the 1956 date, it is likely Another Country, if you look at the legend it should tell you what country it is from.
A penny.
Around 3 cents.
3 cents
3 cents.
About 3 cents.
1.00 to 20.00. du...................
This coin is common and is worth 2 to 4 cents.
It's worth about 3 cents. It's old, but not rare or valuable.
2 to 7 cents in circulatated grades. This coin is not rare.
3-10 cents on average. It's not a rare or valuable coin.
These coins are worth an average of 2 to 6 cents in circulated grades. They can easily be acquired from pocket change.
1956 is a very common date, most are face value to 3 cents. Mint State coins sell for about 25 cents.