1918, stamp booklet 2 coronas, imperial crown / Franz Joseph, stamp booklet panes 3 - 5 and 7 between five unprinted silk paper leaflets, mint never hinged, faultless condition, rare, photo expertize Roger Soecknick VOeB \"genuine and immaculate\" and photo expertize MMag Peter Stastny VPEX \"genuine and immaculate\", Michel 3.900.-