Watch List notes:

Isle of Man, Westminster Bank Limited, £1 (2), 13 May 1958 / 21 October 1960, serial number 223933, 239962, black on pale yellow underprint, arms at upper centre flanked by lion and unicorn and values at lower corners, reverse blue with arms at centre and values to left and right within ornamental guilloche,, (IMPM M313, M314, Q341, Q342), 223933 very fine, 239962 uncirculated and scarce as such (2).

Estimate: £500 - £600