“SMOLNECHNOGORSK STANTS 22 JULY 1871” two-line repeated twice on 10 k. brown/blue (2) to double weight step envelope to “KROVELETS 28 JULY 1871”, on the reverse endorsement “Comtesse d´Alsoufieff” and the scarce two-line station mark repeated with departure day corrected “23”, fine and most unusual
