1840 1d Mulready Envelope: SG-Spec #ME2 (Forme 4, Stereo A181) uprated with 1d black SG #2 from Plate 7 [TE] (small surface rub) tied red MC with another alongside and 'DERRY/JA2/1841' d/arc cds (Irish). Some wrinkling and damaged flap noted for accuracy. Addressed to Dr Slater at High Wycombe. (Image1)