Thats awesome! Turquiose was an original colour, and it does look fairly original. It would need going over though, as the badge on the rear is wrong. It has either been replaced at some point with the wrong badge, or the car may have been restored etc.
I suspect there aren't many, if any original 126's left in that colour! Nice little gem for someone. Lets hope it ends up with someone in the club!
Tom