The Stemmario Bosisio, once known as the Scotti Armorial, now bears the name of the donator who willed it to the Historical Archives of the Dioceses of Como. This is a heraldic manuscript with watercolour illustrations that dates back to the second half of the 18th century. It documents 972 coats of arms of families mostly of the Lombardy region; particularly well represented are the region of Lake Como and the surrounding valleys (Valtellina, Valchiavenna, Val d'Intelvi, Valsassina), Brianza, and also the Canton Ticino and the Canton Grigioni.
This prestigious edition is enhanced by the blazons of the well-known Swiss heraldic expert, Carlo Maspoli; the genealogist Francesco Palazzi Trivelli has contributed valuable brief historical notes for many families.
The volume, which measures 21 x 30 cm, is printed on glazed matt paper; of the 480 pages, 180 are colour illustrations of the coats of arms.
Bound in blue cloth, the volume is hand sewn; the titles on the spine and the cover are in gold. It is protected by a transparent dust jacket.