DINABURG: "44", dotted rectangular, good strike on 10 kopeck brown & blue, clear to large margins. Very fine. Signed Buchsbayew and Brun 

EKATERINOSLAV: 10 kopeck brown & blue, ample to large margins, tied by almost complete strike of boxed pre-philatelic handstamp to piece. Very fine. Signed Buchsbayew

FRAUENBURG (Latvia): 10 kopeck brown & blue, clear at base, otherwise good to large margins, used with pen cross on lettersheet, with reverse side boxed dispatch Mark "FRAUENBURG" with manuscript date "27 August 58", to Riga. Some minor staining in the envelope only. A fine and rare No.1 entire; just one further recorded from this tiny village.  2 certificate Buchsbayew (2018)

ILLUXT (Latvia): 10 kopeck brown & blue, good even margins, used with central and clear strike of small straight line "ILLUXT" with adjacent double line date stamp, to lettersheet to Mühlenhof near Riga, with arrival mark. Cover folds not affecting the stamp. A rare and attractive entire. The only recorded with this pre-philatelic postmark and one of just 2 covers recorded from this small village. Certificate Buchsbayew (2014)

KARGOPOL: 10 kopeck brown & blue, clear at upper right, otherwise large margins, tied by pre-philatelic straight-line "KARGOPOL" with manuscript date "26 April", to lettersheet (side flaps partly reduced) to Onega. Very fine and extremely rare; one of just 2 No.1 entires recorded from this small village and one of very few No.1-covers with a combination of cancellation and manuscript date.  Certificate Buchsbayew (2021) 

KAZANSKAYA: 10 kopeck brown & blue, clear to good margins, used with almost complete strike of small red double line handstamp. Small imperfections. A rare and attractive usage from a tiny village. Signed Stolow and Mikulski with certificate (2007)

KIRSANOV: 10 kopeck brown & blue, good to large margins, tied by pre-philatelic double circle without date to lettersheet to the administration of the ROPIT at St. Petersburg. An attractive and rare entire; the only recorded of this small village.

KOZELSK: 10 kopeck brown & blue, good to large margins, used with central clear strike of dotted rectangular "154". Very fine. Signed Buchsbayew

LIBAU (Latvia): 10 kopeck brown & blue, large margins, tied by blue straight line handstamp to piece. Very fine and unique. Signed Dr. Pirl and certificate Dr. Leupold

LIBAU (Latvia): 10 kopeck brown & blue, large margins, tied by 3-line handstamp "LIBAU .. MAI 1858" to piece. Very fine. Signed Buchsbayew

MINSK: 10 kopeck brown & blue, ample to large margins, tied by clear dotted circle “25” to piece. Very fine. Signed Buchsbayew. 

MITAU (Latvia): 10 kopeck brown & blue, large margins, tied by clear pre-philatelic single line "MITAVA" to entire letter to Moscow, with reverse side arrival mark of March 1858. The stamp tiny penstroke at left; some minor ageing and small part of backflap restored, still very fine and rare; most likely the finest of 4 covers recorded with this cancellation. Certificate Buchsbayew (2015)