1921-32 Script watermark 100r grey-black, variety 'Break in lines below left scroll' (R4/9).
Well-centred with lovely fresh colour, original gum, the odd shortish perforation, still very fine, and a particularly prominent example of this variety.
Very rare. Accompanied by a Sismondo Certificate of Authenticity (2011) incorrectly describes the shade as 'brownish grey', but gives the correct SG number.
An ex Stanley Gibbons stock item with a Catalogue value of £4,500.