Set of 2 Essai coins (1915) in silver (0,835) composed of 1 Drachma & 2 Drachmas. Laurel portrait of King Constantine I and inscription "ΚΩΝΣΤΑΝΤΙΝΟΣ ΒΑΣΙΛΕΥΣ ΤΩΝ ΕΛΛΗΝΩΝ" on obverse. Coat of arms of King George and the word "ESSAI" on reverse. Inside slabs by NGC "PF 64 / SILVER / GUS A. PAPPAS COLLECTION" & "PF 63 / SILVER / GUS A. PAPPAS COLLECTION". Cert numbers: 3162435-001 & 3162445-001. (Hellas T.85+T.88). Extemely rare coins!