1916, 1 pia. registered postal stationery envelope, medium type, used uprated performing 5½ pia. rate tied by GALATA 17/12/16 c.d.s., boxed all arabic censor Galata and violet censor mark Zemun and two large ZEMUN wax seals on front, to Zürich with arrival mark 28/12/16 on reverse, vertical crease, otherwise fine and very attractive
