SCOTLAND. Clydesdale Bank Limited. 20 Pounds, 1972. P-208a. Serial Number 1. PMG Choice Uncirculated 64. Serial number D/A 000001. First prefix of this series and serial number 1 showing William Thomson who was the 1st Baron of Kelvin (Kelvin of Largs) on left and sailing ship watermark at right. Kelvins lecture room at Glasgow University on reverse. PMG has only graded 4 examples and this note is tied with 2 others as top pop. It is our belief that the D/A prefix is also the first prefix for the series which would make this the first note printed for the denomination.
