Banknotes

Ffrench’s Bank, Dublin, for Honble Sir Thos Ffrench, Bart Michl Morris, Willm Keary & Chas Ffrench, unissued £1, 14 Shillings & 1 1/2 Pence (1 1/2 Guineas), 180-, no signatures or serial numbers, good fine, rare and an extremely unusual denomination
PMI PB 148A £300-£400

This is the PMI plate note