Commercial cover franked with 5 lep. in pair yellow-green and 20 lep. red, cancelled "ΠΥΡΓΟΣ 4 ΙΟΥΛ.94" type III, via "ΠΑΤΡΑΙ 5 ΙΟΥΛ.94", "ADEN", arrival "DΑR-ES-SALAM 28/8/94". Roughly opened but unusual destination (Hellas 87a, 89)