SHIFTED perforations beautiful lot from exhibition collection, eight different (Image)

1920 10 penni with PERFORATION B, Haapalahti mail stop cancellation! A NEW DISCOVERY! This cancellation has never been seen on this stamp before. One slightly short perf. A rarity! (L. 90B). Certificate: Lehtonen (2023) (Image)

1920 10 penni with PERFORATION B, rare used, Kotka and part of another cancel. Two slightly short perfs. (L. 90B). Certificate: Lehtonen (2023) (Image)

1920 10 penni with perforation B, beautiful and rare used stamp with Outokumpu cancellation. (L. 90B). Opinion: Kaj Hellman (2014) (Image)

1920 20 penni red pair on a postcard, SHIFTED perforation, beautiful Nakkila 1920 (Image)

1924 20 penni brown with fine SHIFTED perforation (L. 99) (Image)

RARITY! 25 penni mint * vertical pair with sheet margin, IMPERFORATE AT TOP! Only 10 copies are known! (L. 92). Certificate: Lehtonen (2015) (Image)

1921 30 penni / 10 penni beautiful large SHIFTED overprint, machine cancelled (L. 96) (Image)

1919 40 penni B rare very fine mint ** block of 10 stampsfrom sheet corner with plate number! THE LARGEST KNOWN very fine mint ** multiple - a great item to exhibition collection! (L. 72Bd). Certificate: Lehtonen (2023) (Image)

1919 40 penni B fine mint * (L. 72B) (Image)

1924 40 penni green, mint * stamp with beautiful SHIFTED perforation (L. 101) (Image)

1917 50 penni brown single franking on a rare temporary money order form, beautiful Nurmes 1918 (Image)

1917 50 penni green, very fine mint ** right plate block of six nr. 63. Minimal hinge mark on the margin (Image)

1920 50 penni B rare used, Vaasa. Slightly short perf. (L. 93B) Certificate: Lehtonen (2023) (Image)

1920 50 penni B rare used, Vaasa. Fine small shifted perforation! (L. 93B) Certificate: Lehtonen (2023) (Image)

1921 60 penni / 40 penni beautiful large SHIFTED overprint, used (L. 95) (Image)

1921 60 penni lilac, beautiful SHIFTED perforation (L. 103) (Image)

1921 overprint 60 penni / 40 penni, used stamp with nice SHIFTED perforation (L. 95) (Image)

1921 90 penni / 20 penni fine SHIFTED perforation, machine cancelled (L. 96) (Image)

1921 90 penni / 20 penni beautiful large SHIFTED overprint, used (L. 96) (Image)

1921 1½ markka / 50 penni, used stamp with large SHIFTED perforation (L. 97) (Image)

1921 1½ markka / 50 penni beautiful large SHIFTED overprint, used (L. 97 I) (Image)

1922 2 markka on air mail postcard to Sweden, Helsinki 4.7.1924. Early usage of Poste Aerianne cancellation (Image)

10 markka, 75 penni and 25 penni on a beautiful air mail postcard to Panama, Mariehamn 1.7.1930. Several postmarks, rare destination! (L. 76, 92, 104) (Image)

1917 10 markka brown/black, mint plate block of six nr. 18. Maculated with blue pen (apparently somekind of fiscal use) and maculation removed (Image)