This is an original part of the Berlin Wall, given by Daimler - Benz AG to Bill Gates in 1996. It is now part of the Microsoft Art Collection, and curenttly sits in the Microsoft Conference Center in Redmond, Washington.
While I was photographing it Gerold Hübner, who grew up in Berlin, walked by and we struck up a conversation. See my blog post (link in the comments below) for his memories of the day