Registered cover franked 20 lep./25 lep. x3 (two with triple overprint and one with inverted overprint) and 40 lep/2 lep. in strip of 3 (pos. 34/36) with pos.35 the "AEΠΤΑ" error. Cancelled with "ΑΘΗΝΑΙ*6 1 ΔΕΚΕΜ.1900" and arrival "ΠΕΙΡΑΙΕΥΣ 2 ΔΕΚΕΜ.1900" (Hellas 133b, 133d, 156A, 156d, 156)