Boxfile with well written up exhibition display sheets in pl...

Boxfile with well written up exhibition display sheets in plastic pockets - Switzerland 1940's to modern. Stamp Centenary m/sheets (both) and full sheet. Several Centenary covers, National Philatelic Exhibition m/sheet on cover. Selection of 'tax' postage due markings on cover and postcards, several display sheets of Czeslaw Slania's engraving work, likewise Oubangui - Chari, etc etc. (qty)