1918, SHS overprints, specialised assortment of 20 stamps, showing inverted overprints, wrong types of overprint etc., some signed Ercegovic/Jrinjscak resp. opinion. Michel nos. 27/34 ex. (Image)

1918/1919, Overprints on Bosnia/Austria, specialised assortment of apprx. 46 stamps incl. blocks of four, showing varieties of overprint like inverted/double/changed letters etc. Michel nos. 1/25 ex.

1919/1950, Various issues, specialised assortment of apprx. 67 stamps, showing imperf, partly imperf, /imperf between, flaws, 1921 essay, two copies error of colour 10pa. lilac-brown etc. Michel nos. 37/97 ex.