Lot 51612 – RUSSIA 1917 1R imperforate, 2 complete double sheets with shifted colour and gutters

1917 1R in 2 complete horizontal double sheets of 112 (including each 12 decorated fields) with large horizontal gutter (16 gutters), showing also different colour shade of brown printing, both with progressive stronger getting colour shift of red orange print of eagle & value, never hinged, very fine, Standard 152, Zverev & Gilmanov 139, Liapin 148