Watch List notes:

Isle of Man, Barclays Bank Limited, specimen colour trial £1, 19- , (1924-'26), no serial number, black on green and yellow underprint, hole-punch cancellations lower left, right and upper right with red 'Specimen, Waterlow & Sons Ltd.' handstamp over value at lower centre, reverse green with harbour scene and steamships, red Specimen handstamp at lower-centre, number '457' upper right margin and 'Specimen Note, Waterlow & Sons Ltd.' upper left margin,, (IMPM M341s, Q384), uncirculated, Quarmby states only one known - presumably this example - and consequently very rare, likely unique and a lovely striking example.

Estimate: £800 - £1200