"The complete working Babbage engine is on public display at the Science Museum in London. A duplicate engine and printer, a 'second original', the Babbage Difference Engine No.2 was completed for a private benefactor of the project, Nathan Myhrvold, formerly chief technology officer and Group VP at Microsoft. The Babbage Difference Engine No 2. was on displayed and demonstrated from May 2008 to January 2016."
Here's the thing, as I understood it the Science Museum in London got to keep theirs, the second one, would go through the Computer History Museum for a year, and then on to Nathan.
Except if you read my link, the London Science Museum has taken theirs (which is not Nathan's) off display. That was what I was saying "Argh!" about.
Apparently the Computing gallery is closed so it can be replaced with a new Mathematics gallery. Hopefully that will manage to incorporate the Difference Engine somewhere.
and http://www.computerhistory.org/babbage/modernsequel/
"The complete working Babbage engine is on public display at the Science Museum in London. A duplicate engine and printer, a 'second original', the Babbage Difference Engine No.2 was completed for a private benefactor of the project, Nathan Myhrvold, formerly chief technology officer and Group VP at Microsoft. The Babbage Difference Engine No 2. was on displayed and demonstrated from May 2008 to January 2016."