1918, "60" small overprint on 1 k. perforated, Type 3, upper sheet margin, fresh colours, lightly tied by cds. showing "29 12 18" (very likely ADLER CHERNOM.) to small telegram form to the administration of the agricultural cooperative in Sochi, reverse arrival cds. "SOCHI CHERNOM 2- 1 18 a" (slipped digit for year 1919), very fine. A delightful item of great rarity, with a similar cover from the same correspondence illustrated in Geyfman, sign. and certificate Ceresa (2014) (Geyfman 2)