Great Britain 1840 1d Mulready envelope (Forme 4, Stereo A175) & 2d Mulready letterhead (Stereo A99), SGME2/3.
Very fine unused pair of Mulready's, both endorsed in manuscript at foot "Proof" over value tablet.
Scarce examples from the dawn of the prepaid postal system.
Provenance: Ex. Shaida & "Mayflower" Gold Medal Grand Prix Collection.
Accompanied with a 1994 British Philatelic Association Certificate of Authenticity (in respect of the 2d Lettersheet).
