1884 US dollar coin with "In God We Trust" ... In 1865, with the conclusion of the Civil War, a new Act was passed by Congress to allow the addition of the phrase "In God We Trust" to currency. "In God We Trust" was still not the national motto at this point and was not used on all money. It was simply allowed to be used on coins, and was used mostly on small denomination coins along with the national motto, "E Pluribus Unum."

1884 US dollar coin with "In God We Trust" ... In 1865, with the conclusion of the Civil War, a new Act was passed by Congress to allow the addition of the phrase "In God We Trust" to currency. "In God We Trust" was still not the national motto at this point and was not used on all money. It was simply allowed to be used on coins, and was used mostly on small denomination coins along with the national motto, "E Pluribus Unum."