Following the withdrawal of the limited edition 1916 commemoration definitives, the ninth series made its debut on 13 January 2017 with an initial twelve designs based on objects described in "A History of Ireland in 100 Objects", a book by Fintan O'Toole. The introduction included eight different SOAR stamps (Stamps on a Roll), a range of coil stamps, and a domestic and a foreign rate stamp booklet that each illustrate different objects. Some of the objects illustrated are the Tara Torcs, Broighter Boat and Old Croghan Man Armlet. The balance of the series were to be issued over the next five years and in July 2020 Phase IV of the ninth series were made available as eight new stamps illustrated the following objects: the Ballinderry Sword, the four-metre long Waterford Charter Roll, dating from 1215 to 1373, an original 15th or 16th century Gallowglass gravestone (extant in Clonca, County Donegal), the 1790s Robert Emmet’s Ring, a 19th century cooking pot from the National Museum of Ireland, a 1911 Titanic launch ticket, a washing machine and a Pentium processor.