Lot 81151 – 1915 (May) 6c on 4h green, overprinted in violet,

1915 (May) 6c on 4h green, overprinted in violet, mint se-tenant vertical pair with dull violet « G.R.Mafia » and « G.R.Post 6 cents Mafia », the top stamp with the type 1 overprint and the lower stamp with the type 2 surcharge, top stamp lightly hinged and bottom stamp unmounted mint, vertical gum crease at right. Very fine and an extremely rare variety, exhibition showpiece Provenance: Colonel J.R. Danson Expertise: Cert. BPA (1955) & Brandon (2006)