Five Pounds Lowther QE2 & Elizabeth Fry B393 Turquoise Foil hologram windowed thread issues 2002 (20) all about UNC - UNC and in 4 consecutively numbered sets with examples of each recorded prefix for this type as follows - HA55 101484 & HA55 101485, HB32 116847 - HB32 116856, HB42 102861 - HB42 102865 and JA03 200343 - JA03 200345.
Estimate: 160-240 GBP