The coins in dreams represent the chances you have missed and the choices you didnt make. Perhaps you didnt do some things in your life, therefore you feel sorry for it. The golden coins in dreams could also indicate the happiness and achievements of your goals in the life. If you see the coins that are silver, then it shows the knowledge and wisdom that is in you. If you saw the stack of the coins, then such dream represents the strength of your personality. The dream, in which you flipped the coin, represents the attitude of your personality where you do not take things too serious. Perhaps you look at things very easily without any stress.
Read more about dreaming of Coins in other dream meanings interpretations.