That looks like a junker to me. Someone must have slapped a sticker with the Campagnolo name on it, because they don't make bikes, only components--and if they ever did choose to make a bike, it would be a lot nicer than that!
I mean, if it's 15 euros, sure, fine, use it as a beater, but I wouldn't spend 50. Also it's in pretty bad shape, and you will spend more than it's worth getting it in decent order.
1964 JRJ (Bob Jackson), 1973 Wes Mason, 1974 Raleigh Gran Sport, 1986 Schwinn High Sierra, 2000ish Colian (Colin Laing), 2011 Dick Chafe, 2013 Velo Orange Pass Hunter