WEW!! BRAVO !!

You where quicker than expected to find the identity a plane whose only 12 (including the prototypes) where built
http://www.luftfahrtmuseum.com/htmi/itf/dmerc.htmI made one flight from Marseille to Paris on here in the late 80s. Very comfortable plane, she was a total commercial disaster.
Terribly fuel thirsty, the Max range was 594 nm !!! It was joked that it was impossible to sell such a plane on exportation because with such a "range" she could not leave France...
So the 10 built for Air Inter made a nice "indoor" career before beeing retired in 1995