ΚΙΟΣ: Turkish PS card fr. with 1pi 1920 (Mi.679) ovpt. "EΛΛHNIKH/ ΣΤΡΑΤ.ΚΑΤΟΧΗ/ΚΙΟΥ" in red & canc. bilingual GUEMLEIK plus double-ring Greek censor "EΛΛHNIKH ΣΤΡΑΤΙΩΤΙΚΗ-ΛΟΓΟΚΡΙΣΙΑ*Μ.Σ." (typ.I) in black. Very rare.