1850/2013, mint never hinged, unused and used stock, including sheets, stamp booklets etc.

1849/2000, unused and used collection in three Schaubek albums with many complete sets, better items such as Mi. 35-38 unused, Mi. 186 Souvenir sheet unused, Mi. 354-365 unused, etc.; good selection of railway parcel stamps with complete sets including Mi. 171-194 unused; condition varies especially in the 19th century issues, overall very fine

1849/2005, MNH, unused and used, very rich collection with including Mi.-No. 34b, 129-42, 145-58, 235-43I, 333-41, 354-65, etc., plus service, postage, railroad stamps, newspaper parcel stamps, etc.

1849/2015, in the beginning used later unused collection, in the main numbers apparently complete incl. Mi.-No. 34, in addition 1918 Red Cross and 1919 Stahlhelm, 1929 Crown overprints, as well as Mercier, Orval, good part railway stamps etc., good condition

1873/1990 (ca.), around 750 postal stationary items, unused and used, including registered mail, express, picture postal stationary Belgian Congo, German occupation, etc.

1909, 10fr. yellow-green/black, bloc of twelve with local overprint, position 8 with double strike, tied by cds "BOMA 16 AOUT 1909", very fine and very scarce multiple

BURUNDI INDEPENDENCE: 1962/69, collection of over three hundred (300) used stamps and thirty (30) souvenir sheets, as well as a few covers, neatly mounted and mostly written up on album pages, overall condition very fine (ex Mi.-Nr. 3/505)

1915, Handstamp "CHEMINS DE FER / SPOORWEGEN" on 5 c.-5 fr., 10 values, unused o.g., 20 c. Sunday lable separated, 25 c., 1 fr. and 2 fr. tiny thins, otherwise very fine, several signatures, certificate P. Kaiser AIEP (2023)

1915, Handstamp "CHEMINS DE FER / SPOORWEGEN" on 5 c.-5 fr., 10 values, unused o.g., 5, 20 and 50c. and 1-2f. with tiny thins, otherwise very fine, signed and certificate P. Kaiser AIEP (2023)