Currency Commission, Bank of Ireland, colour trial £1, 5 September 1978 (fictitious date), serial number 00ZK 000000, Brennan and Gargan signatures, blue print, red SPECIMEN overprint, in PMG holder 64, choice uncirculated, scarce and very attractive
PMI CBI 1, Pick 8cts £1,200-£1,800

Revised estimate £1800-2000