Sc#104a Perf 12 Magenta
Transparent paper (almost like "Goldbeaters skin")
Designed : M. Demirdjian.
Engraved Nazmi Effendi.
Stanley Gibbons suggests Interior and Exterior (Foreign) Postage stamps, have been used indisciminately for interior and exterior postage.
Steiner Page 6 (Updated) Main varieties covered. (Except Sc#99a)
Just 1 space left to fill.
Note : Look carefully between 5 Para and 5 Piastre Ochre and Bistre, can be easily missed.