Ten cents if the coin is completely uncirculated. If your coin has any wear/tarnish/evidence of being in circulation, it is probably only worth one cent.
One cent.
I've checked a completed listing of a 1966 Zambia penny on Ebay, and it sold for $7.70 GBP.
$100000000.99
It only has face value
Depends on the year and condition.
A 1966 Lincoln penny typically has little numismatic value, as it was produced in large quantities and is common. However, if you meant a 1966 penny that has an unusual error or unique feature, its value could increase significantly depending on the rarity of that characteristic. Generally, a standard 1966 penny is worth only its face value of one cent. Always consult a coin expert or appraiser for specific evaluations.
Face value
It's worth 2 cents for the copper.
It would depend on the province that minted it and the condition.
Face value
It's a common date, worth 2 cents for the copper.
The last Australian Penny was minted in 1964. Their place in the Australian currency was replaced by the 1 cent coin in 1966.