British Linen Bank, specimen £1 (2), 29 February 1968 and 20 July 1970, serial numbers U/4 000000 and D/5 000000, Walker signatures, both with red SPECIMEN overprints, second with additional De La Rue ovals and single cancellation hole, second with mounting traces, otherwise both uncirculated and scarce (2 notes)
PMS BL 75s £100-£150