Guernsey (2) a pleasing pair including the Large size black M. J. Brown signature 10 Pounds Pick 50b (BY GU 52b) ND 1980-89 a FIRST prefix for this signature type serial number C 861309, presentable GVF. Along with the Commemorative "Millennium" 2000 issue signature Trestain 5 Pounds Pick 60 (BY GU 46) with a single special M prefix type and a fairly earlier serial number M 001682, about UNC - UNC.
Estimate: 25-45 GBP