SG 356 1/2d Deep Cobalt Green N14 (18) Watermark Royal Cypher lower sheet marginal in Post Office fresh unmounted mint condition.

Very clear and distinct stepped shade up from the far commoner Cobalt Green as you would of course expect.

Every single stamp ever listed here or at UKGBSTAMPS has been inspected front and reverse and identified by myself alone for shade and grade and not a job I have or will ever delegate to any less experienced person.