parchment and paper
Parchment and paper, i (modern paper) + 70 + i (modern paper); 1¹⁸ 2-3²⁰ 4²⁰(-8); [1-70], modern foliation in pencil, upper left and upper center recto. Gatherings have outermost and central bifolia of parchment with paper bifolia in between.
Modern leather, blind-tooled, with 2 clasps.
Written in Spain or Italy, ca. 1460.