Watch List notes:

Isle of Man, Douglas & Isle of Man Bank, unissued £1, 18- , serial number 50893, black text with arms flanked by lion & unicorn at upper-centre, steamship and castle in background, allegorical female figures with sheep and farming tools at left, reverse attractive floral design with arms at centre and castle views to left and right,
(IMPM M260, Q315), in PMG holder 58 EPQ Choice About Unc, 'Dumbell's Banking Company Limited' red handstamp at left