1920 study of the 4 kop Mi 6a, 32a and four unlisted rouble surcharges incl. rare 5 r (type 3) over large Z in violet, ex T. Pateman (Image)

1920 framed Z on type E4 on very fine mint ** pair with cto Elenovka, all cancels other than Erivan and Alexandropol are rare, short opinion: Berger (2010) (Image)

1920 large framed Z in violet on 1 rouble imperforate (Mi 216, 250€), then unframed Z inverted, postally used copy, 50 rouble surcharge inverted, ex T. Pateman (Image)

1920 overprint large Z in violet on 7 kop, unlisted in Michel. Very fine mint **. Scarce Serebrakian combination in fresh condition, short opinion: Berger (2010) (Image)

1920 5 r surcharge type 2 over large Z in violet Mi 104 Ib unpriced, very fine mint ** scarce stamp. Certificate: Berger (2019) (Image)

1920 combined surcharges on 2 kop imperforate showing all four combinations listed under Mi 104. Very scarce, T. Pateman guarantee notes (Image)

1920 combined surcharges, 5 r over unframed Z with and without monogram, Mi 104 Ia and 104 IIb, total Mi over 600€, Pateman guarantee notes (Image)

1920 very scarce counter surcharge 5 r on 25 k inverted very fine mint ** block, signed Kaushavili in red ink, cto Erivaca SG lists as SG 77 (Image)

1920 100 r over small black Z Mi 116 Ia but imperforate, one hinge, very scarce item, short opinion: Berger (2015) (Image)

1920 matched pair of 100 r over Z in black and in violet, Mi 116 Ia and 116 Ib but unlisted as imperforate, one stamp very fine mint **. Ex T. Pateman (Image)

1920 100 r on 7 r two different types of basic stamp (see frame lines), plus 100 r over unframed Z on late print of 7 r (Mi 117 Ia), cancels are Erivan "k", ex T. Pateman (Image)

1920 Chassepot issue, proofs of pictorial centres, original printing, short opinion: Berger (2014) (Image)

1923 manuscript "1k" in red on 250 r imperforate Mi 167B, hinged mint *. Marginal copy with typical gum stop, very scarce in this quality, Kurzbefund: Berger (2018) (Image)

1922 manuscript "k" converting 35 to 3 k Mi 170B, superb four margins with Alexandropol cancel, short opinion: Berger (2013) (Image)

1922 Second Yessayan, set of eight very fine mint ** stamps with full gum, from the second reprint made by Yessayaca Important reference material (Image)

1923 metal overprint 100 000 on pair 1000 r Mi 177, showing clearly mixed violet-black ink, the violet penetrating to reverse, scarce, signed: Romeko. Normal stamp for comparbig, ex T. Pateman (Image)