2 1/2d INDIGO Fine Used

1912 Royal Cypher SG Spec N21(15) 2 1/2d Indigo on toned paper. A fine used single of this rare shade. Cat £2500

2 1/2d SG 373a Prussian Blue

1912 Royal Cypher SG 373a Spec N21(17) 2 1/2d Prussian Blue. A fine used single of this rare shade