One cent for the bronze penny, and a tiny amount for the gold plating.
If you think about it, a gold penny from 1964 would have been impossible. First, the US stopped minting gold coins in 1933 and private ownership wasn't allowed until the 1970s. Second, even at the (relatively) low price for gold in 1964 one cent worth of the metal would have been smaller in diameter than a pencil eraser!
The US has never made a gold one cent coin, it has been plated or has toned to a gold color and it has no collectible value.
1 cent
If the coin is a Lincoln cent dated 1964 it may look like gold or have been gold plated but the US Mint has never made a gold one cent coin.
5 cents
1 Dollar
The US NEVER made any gold 1 cent coins
1 cent
No gold US one cent coins were ever made.
If the coin is a Lincoln cent dated 1964 it may look like gold or have been gold plated but the US Mint has never made a gold one cent coin.
5 cents
1 Dollar
The US NEVER made any gold 1 cent coins
So many 1964 Kennedy half dollars were made and saved the value is just for the silver, about $5.00
1 cent. They are in common circulation. Cents have never carried a mintmark for coins minted at the Philadelphia mint.
1 cent. It's plated. The US has never made a gold penny.
The coin does not exist, the only possible mintmark for a 1964 Lincoln cent is a "D'. The "D" may have been damaged during or after the minting process but the coin is only worth face value.
The US never struck any gold 1 cent coins, it's likely a Indian Head cent that's been cleaned and just looks like gold and has little if any collectible value at all.
No gold US one cent coins were ever made. Please look at the coin again and post new question.