MULREADY LETTERSHEET USED ON MAY 6, 1840 1840 1d Mulready lettersheet, stereo A57, used on May 6th (octagonal 12Nn pmk on reverse), also handstamped “More to pay” and charged 2d, creased down the centre, reinforced and some staining, possibly posted the day before, rare Expertise: Cert. RPS Estimate: € 2’000 – € 3’000 (Image)