This is a Pack of 240 Vintage Guildhall Accountancy Analysis Paper 39 Series in Various Rulings some of which are now discontinued;

Choose from 39/6, 7, 8, 9, 10, 11, 12, 15, 20, 13P, 18P, 30P and 31P.

This is probably from the late 80's or early 90's.