In all my time with Lancias I've not seen a full on convertible like this one.
It is definately is a converted Coupe, the boot and rear light clusters give it away . Registered in 1986, since production stopped in 1984 I guess it could have sat around unregistered or spent some time being converted. But the front grille etc is that of a late car in the production run.
Maybe it was a specialist coachbuilder like Zagato, Felber or similar. Like the Mizar or the Medusa.
Just playing devils advocate....Why make a special Coupe Convertible when you could just go buy the Beta Spyder? For those two extra "seats" in the back???
I know Lancia used to do this kind of thing though, Gianni Agnelli had two Delta Evoluzione II cars made into 2 door convertibles for his wife and daughter.
Would be intersting to see the car in the flesh and find out more of its history - like who did the conversion.
On a similar theme, I once saw a Ferrari 308 GT4 turned into a convertible but I personally would have just gone and bought a car that was designed to be a soft-top from the start!
That car needs a fair bit of TLC