"In God We Trust," the official national motto since 1956 and a familiar sight on U.S. coins and currency, will be hard to find on the new presidential dollar coins that have been released this past Feb. 15, 2007.

The new gold-colored dollar pieces, featuring images of U.S. presidents, will move the inscription from the face of the coin to the thin edge, along with the year and the previous national motto, "E Pluribus Unum," Latin for "Out of Many, One."

The official reason for the design change? To allow space for larger portraits of the presidents on the face and the Statue of Liberty on the reverse, according to the Mint.

The new coins will be the same size as the 1979 Susan B. Anthony and the 2000-2002 Sacajawea.

For the first time the coin will also say "$1" instead of "One Dollar."

The new coins also are going to feature a different president every three months. The mint will continue honor four presidents each year until at least 2016. Collectible versions of these coins will be sold in both proof and uncirculated conditions and in a variety of special collection sets. Additionally, each presidential spouse will be honored with a 24-karat gold coin.