Can you help to identify these frames, bikes or parts?

Hello chaps. Can anyone help me figure out what sort of tubing this frame has? Its a diamant from belgian, I bought it a couple weeks ago off someone off here and absolutely love it. It weighs 2kg with forks. Has a little hanger off the top tube for what I suspect is for attaching your racing number? I'm a bit new to all this so am learning as I go along. The reason I ask is I would like to get a decal of the tubing type for the seat tube.

It has a Cinelli BB Shell like so http://velobase.com/ViewFramePart.aspx?ID=73EA175F-01A2-4256-9005-CE0F741B67E4&AbsPos=83 and Campagnolo drop outs. Also has internal cabling in the top tube for the rear brake. Seat tube is 27.2. I found a picture of a frame that looks identical to it that has a Columbus Max decal on it but cant be sure this is the correct tubing?

I have attached pictures which I shamelessly nicked from the previous owners ad.
Its not Max probably SL OR SLX