Cover (stamp cut off on fragment) including document from Koutloumousioy Holy Monastery dated "14 Μαρτίου 1917", arr. "ΘΕΣΣΑΛΟΝΙΚΗ*21.ΜΑΡΤ.17". Censor tape "CONTROLE POSTAL MILITAIRE" and triangular cachet "NO" on arrival. Also boxed in blue "CONTROLE POSTALE MILITAIRE/MONT ATHOS". THE ONLY KNOWN TILL TODAY. RRRR.