This chair is of the same model as W.1 to 3-1968, and bears the same stamp, 'IP', as on W.3-1968, but its proportions differ by more than is likely to have been tolerated if they were made as part of the same set. Presumably, therefore, they are from different commissions, but made around the same time in the same workshop (probably Seddon, Sons and Shackleton).