To dream of coins implies that you may have missed a chance to take advantage of a situation or matter that was offered to you. To see gold coins symbolizes prosperity and achievement. Silver coins are indicative of morals, ethics, personality, and character.
To see coins stacked in your dream represents male aspects such as vitality, control, and authority.
To dream that you are flipping a coin implies that you are not overly concerned with a choice you are faced with. Perhaps you are being too impulsive or spontaneous. You need to be held accountable for your actions and words.