Watch List notes:

Commercial Bank of Scotland Limited, an obverse and reverse die proof for a £1, ND (1946), violet and white, also an obverse and reverse die proof for a £1, ND (1953), blue and white, both Lord Cockburn top right(Banknote Yearbook SC405 for type), date in low margin '11.9.46' and 20.10.53' respectively, extremely fine and rare (4).

Estimate: £300 - £350