Many catalogs are produced around the world, generally for the coins of the country where the catalog is produced. In the U.S., one guide, the "Red Book" has been produced annually since 1946. In the U.K., the coin dealer Seaby produced catalogs on U.K. coins as well as ancient coins. The catalogs were purchased by Spink's in 1996 and are continuing under the Spink's name. Spink's was founded in 1666.