Almost. Myhrvold provided funds for the British Museum to complete their copy, and build him a complete machine. From Wikipedia: "After the Science Museum in L

Almost. Myhrvold provided funds for the British Museum to complete their copy, and build him a complete machine. From Wikipedia: "After the Science Museum in London successfully built the computing section of Charles Babbage's Difference Engine #2 in 1991, Myhrvold funded the construction of the output section, which performs both printing and stereotyping of calculated results. He also commissioned the construction of a second complete Difference Engine #2 for himself, which has been on display at the Computer History Museum in Mountain View, California, since May 10, 2008." I've seen both machines and they are marvels. I was especially excited to finally see the second machine in operation last fall. It is mechanical poetry in motion.