Twenty Pounds Gill examples of the transition between designs 1988 & 1991 (12) all circulated and a pleasing mid-grade group Fine to VF and few with inked accounting numerals. Consisting of the B355 Purple/Green 1mm Windowed Thread William Shakespeare watermark issues 1988 (8) prefixes 05L, 10L, 17M, 23S, 27N, 27R, 34W and 68M. Together with the changed and now small sized design B358 Purple/Black Square symbol for the sight impaired Crown at upper right issues 1991 (4) including examples of the first series prefixes - A50, A83, B59 and D17.