So, interestingly, the bike is actually built by a different De Rosa (than the usual one from Milan), this one from somewhere around Naples. Found this post: http://italiancyclingjournal.blogspot.de/2009/11/other-de-rosa.html
The ad states that it's built with Columbus Maxium tubes (similar til Gilco), other than that, it doesn't really provide much information.
@ArthurFrayn started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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So, interestingly, the bike is actually built by a different De Rosa (than the usual one from Milan), this one from somewhere around Naples. Found this post: http://italiancyclingjournal.blogspot.de/2009/11/other-de-rosa.html
The ad states that it's built with Columbus Maxium tubes (similar til Gilco), other than that, it doesn't really provide much information.