There were a variety of specials in the last years of 147 production, with loads of names (Collezione, Quadrifolgio Verde, Ducati Corse, Monza, Blackline, Sportivo etc) a lot of them werent available in the UK. And there are differences - in Japan and Holland Ducati Corses were 2.0 TS engined and in some countries there was a Quadrifoglio Orio, for instance.
Some that werent available in the UK were available in Ireland and its possible that yours is an Irish spec one. Under EU law you can order a right hand drive version from another EU country, this may also be a reason for it - I know back when Autolusso sold new cars they sold some right hand drive spec cars that werent actually available here and they sold some 147 Blacklines, yours maybe one of them and because it wasnt officially a UK spec car the DVLA just named it after a special edition that was available here.
Edit: As yours has the two tone interior, pretty sure its a Blackline and the DVLA just put Collezione on the V5 cos Blackline 147s werent officially imported.
Last edited by typos1; 09-02-16 at 15:55.