MITAU (Latvia): 10 kopecs brown and blue, clear to large margins, tied by pre-philatelic single line "MITAVA" to entire letter to Pernau, with reverse side dispatch- and arrival marks of March 1858. Very fine and rare; 1 of 4 covers recorded with this cancellation. Certificate Buchsbayew (2015)
 

NOVOKHOPERSK: 10 kopecs brown and blue, good to large margins, tied by pen cross to envelope with reverse side straight-line " NOVOKHOPERSK", with manuscript date "26 Februrary", to Moscow. A very fine and rare entire, just two further No.1 entires recorded from this city. Certificate Buchsbayew (2018)

ODESSA: 10 kopecs brown and blue, clear to good margins, tied by boxed "ODESSA 19 APRIL 1858" to lettersheet to Wiborg, Finland. A fine and scarce entire with unusual destination. Certificate Mikulski (1998)

PERNAU (Estonia): 10 kopecs brown and blue, good to large margins, tied by pen cross and additional arrival mark "POLUCHENO 26 JAN. 1858" to lettersheet with reverse side dispatch mark "PERNAU 1858 JAN 25", to Reval. Very fine and fresh. A rare early entire. Certificate Buchsbayew (2014)

REVAL (Estonia): 10 kopecs brown and blue, ample at base, otherwise large margins, tied by pen cross and additional boxed "REVAL 26 MAR. 1858" to entire letter to Helsingfors, Finland, with arrival mark. Very fine and fresh. Certificate Buchsbayew (2016)

REVAL (Estonia): "37", dotted circle, clear strike, together with pen cross on 10 kopecs brown and blue, good to large margins, tied to lettersheet with reverse side clear dispatch mark "REVAL 2 APRIL 1858", to Hapsal. The finest of 5 recorded No.1 entires with this cancellation. Certificate Buchsbayew (2017)

RIGA (Latvia): 10 kopecs brown and blue, good to large margins, used with pen cross on lettersheet with adjacent "POLUCHENO 16 JAN: 1858" and reverse side dispatch mark "RIGA 14 JAN 1858", to Reval. An attractive and rare entire of the 2nd week of circulation. Certificate Buchsbayew (2014) 

RIGA (Latvia): 10 kopecs brown and blue, good to large margins, tied by c.d.s. "RIGA 22 APRIL 1858", to letter sheet to Pernau, with bilingual arrival mark. The stamp shows tiny tear at lower right, not touching the design.. A fine and attractive letter. Certificate Buchsbayew (2014)
 

SAMARA: 10 kopecs brown and blue, clear to large margins, tied by pencross to letter sheet with reverse side dispatch mark "SAMARA 25 JAN. 1858", to Saratov, the stamp additionally tied by arrival mark "RECEIVED IN SARATOV 1858 JAN. 28 ". Very fine. Very rare entire; just 4 No.1-entires recorded from Samara. Certificates Dobin (2008) and  Buchsbayew (2021)
 

SMORGONY (Belarus): 10 kopecs brown and blue, ample to large margins, tied by pre-philatelic double line "SMORGON 1858/ AUGUST" with "20" added by hand,  to small envelope to Warsaw, with arrival marks. The envelope with small imperfections, otherwise fine. A rarity. Just one further No.1-entire recorded from this city and just 11 from Belarus soil. Certificate Buchsbayew (2013)

SUPRASL (Poland): 10 kopecs brown and blue, good to large margins, with sheet margin at right, tied by merchants handstamp "…SUPRASL" and in transit by boxed "BELOSTOK …", to lettersheet to Warsaw. The name in the address cut out, otherwise fine. The only recorded No.1-cover from this small village  one of very few entires recorded from todays Polish soil. Certificate Buchsbayew (2018)
 

TAUROGGEN (Lithuania): 10 kopecs brown and blue, good to large margins, tied by boxed "TAUROGEN 15 MAR.1858" to letter sheet to St Petersburg. Very fine and scarce. Signed Bolaffi, Alberto and Enzo Diena and certificate Buchsbayew (2018)