Five Pounds O'Brien Lion & Key (8) Shaded £5 symbol reverse - 1957 to 61 - Helmeted Britannia front B277 (6 ) first series A31 552172 , A39 545187, A52 491130, & B33 041165, B71 002173 , C46 588573 VF to Good EF and WHITE £5 symbol reverse - 1961 to 63 B280 (2 ) first series H86 155439 VF , H81 829861 EF
Estimate: 100-200 GBP