It could be called the Ten Commandments of Major League Baseball, even though it’s 74 pages long. Or perhaps, since it has just been discovered, it could be baseball’s version of the Dead Sea Scrolls. Regardless, the 1876 “Founding Documents and Original Constitution of Major League Baseball” are a valuable piece of sports memorabilia. The documents will go on sale May 24 in online bidding sponsored by SCP Auctions, Sports Collectors Daily reported. The artifact is a handwritten document that officials from California-based SCP Auctions claim is of “unprecedented historical significance.” The contents became part of baseball’s early bylaws, but the location of the original documents had been a mystery. They had been in the possession of the family of a longtime National League executive and had been passed down through the generations, Sports Collectors Daily reported. “This is a huge revelation,” SCP Auctions Vice President Dan Imler told USA Today. “This is not a document that has made the rounds publicly. It’s never been exhibited in a major institution. It’s never been sold previously in a prior auction. It has never appeared anywhere.” The baseball constitution continues a trend of originating documents that have come to auction. In 2016, SCP Auctions sold a set of 1857 documents representing the original rules of baseball for $3.26 million on auction, Sports Collectors Daily reported. James Naismith’s original 13-page “Rules of Basket Ball” sold for $4.34 million in 2010 by Sotheby’s to a consortium put together by Josh Swade, who chronicled his quest in his 2013 book, “The Holy Grail of Hoops One Fan’s Quest to Buy the Original Rules of Basketball,” and in an ESPN documentary. The SCP auction for the baseball constitution documents will close on June 10.