SG35f Variety. 1891.
6c on 8c Mauve. Surcharge Inverted and "Cents" Omitted.
Superb fresh well centred mint with beautiful 'strong' colour and full perforations.
Provenance; "Walter Bickley" (Spink, London 14 July, 2011).
David Brandon Certificate.
Very Rare and Exceptional Quality.