The coat of arms of Puerto Rico were first granted by the Spanish Crown in 1511, and are the oldest arms still used in the New World. It was officially re-adopted by the Commonwealth government of Puerto Rico in 1976.
All U.S. states employ a seal as their official emblem. A seal of Puerto Rico exists, but it has been replaced with the traditional coat of arms as the main emblem of the commonwealth. The seal shown at right, as opposed to the original coat of arms (above right), was de-Christianized. In the seal, the lamb is missing its halo and carries a white banner instead of one with a red cross. The lamb's staff does not have the cross mounted on top. The book the lamb sits on does not have the seals of the Book of Revelation.