Fiat never sold an "Abarth" 126 so it's just a rep, especially since it's a BIS and there's barely any performance mods you can do to them as the engines tend to be fairly weak, I'd personally say it's a bit high for a BIS, but it is a low mileage car (if that mileage is genuine!) Doesn't mean it's safe from all those BIS headgasket issues
I also don't see why it's advertised as "Original Unmolested" When it's got Cinquecento sporting alloys on, the parcel shelf butchered to F*** to fit those speakers, a none standard headunit and none standard stickers but heyho- I'd probably steer clear because it'll no doubt need a rebuild after standing for alot of it's life and that's not a cheap endeavour and can be a massive headache!