Watch List notes:

Martins Bank Limited, Isle of Man, colour trial £1, 19- (c.1929), no serial numbers, no signatures, green on pale green underprint, bank arms at left, Tower of Refuge at right, reverse green, triskeles at centre, Castle Rushen at left, Albert Tower at right, overprinted SPECIMEN WATERLOW & SONS LTD in red, once on obverse and twice on reverse, three punch holes,, (Pick 18ct, Quarmby 358, Banknote Yearbook IM13act, IMPM M322ct), in PMG holder 64 Choice Uncirculated and very rare.

Estimate: £800 - £1,000