They are after market alloys, I have seen them on a cinquecento before.
I have just changed them over for my new ones and the rear (185/55/13) have scrubbed the rear inner arch abit so smaller tyres or a spacer recommended.
To be honest i would get new tyres but think these would get through an MOT, tread seems ok but some fine cracks as they were sat around for a long time.
Regards
marc