How much is a 1912 Greek 5 Aenta coin with a hole in it worth?

You are asking about a 5 Lepta coin from Greece (KM#62). (The Word that you read as "Aenta" is actually "ΛΕΠΤΑ", which would be written as "lepta" in the English alphabet.) 25,053,000 of these coins were produced in 1912. According to the Standard Catalog of World Coins, an example would be worth US$0.75 in Fine condition, US$3.00 in Very Fine condition, US$7.50 in Extremely Fine condition, US$75.00 in Uncirculated condition, and US$125.00 in Brilliant Uncirculated condition.