1931, King Albert I with cap, highly specialized, unused, mint never hinged and used research collection with covers, containing a wide array of interesting items like Unadopted photgraphic essay, different proofs, imperforated stamps, se-tenants, booklet “Fyffes”, full sheets, 75c. tete-beche and tete-beche with gutter, the latter also on cover, different covers and usages etc. etc., all neatly written up on two volumnes and extra material in 3 albums, mostly good quality
