Three publications by Marian Gumowski, in the form of separate overprints from Slavia Occidentalis, bound in a single cloth binding.
- "Mint relics of the Branibor princes from the 12th century". - edition 1927, Poznań; pages - 25 + 1 table;
- "The Branibor case of the XII century", part I - edition 1928, Poznan; pages - 44
- "The Branibor case of the XII century", part II - edition 1929, Poznan; pages - 63
Each with an ex-libris by Lech Kokociński.