Yes I know, I`m am slow (sometimes).
Bradenav and his post #8465 on the twin boom motor glider from Argentina apparently opened a lot of shoe boxes with clippings.
One of the characteristics of the Mantelli (Alaparma) aircraft was that they had a single central fin/rudder (with the exception of an AM-10 built in Argentina which had twin fins. That aircraft was registered LV-X7)).
Since In still have problems attaching photos, I have asked David (Lightning Mate) to post a picture of what I think is the AM-11 Albatross. The photo quality is not good, but the aircraft has the single fin and this is also seen in the PM-12 glider picture. This aircraft was registered LV-X8.
So my question remains, what is the twin fin motor glider in post #8465 which seems to have smoother fuselage lines (and twin fins) than seen on all other Mantelli/Alaparma models. In understand that Adriano Mantelly went to Argentina during the early 1950s.
Please don`t kill me, I am only a messenger.