"Fores's Comic Envelopes n°1" Mulready caricature Deraedemaker reprint sent registered from Brussels to Paris with Belgium 50c and 25c Leopold franking, some minor faults, a scarce usage (Image)

Spooner "Letter Writing" Mulready caricature, unused, possibly an essay(?) as it shows no printer's imprint at foot and reverse has "No. 2 REJECTED DESIGNS FOR THE POSTAGE ENVELOPE", and shows many small differences in the design, fine (Image)

Southgate "Pick-Pocket" Mulready caricature, unused, possibly an essay(?) as it shows no printer's imprint at foot and reverse has "No. 3 REJECTED DESIGNS FOR THE POSTAGE ENVELOPE" (it was issued as No.1), and shows many small differences in the design, fine (Image)

1890 FORES'S No 4 "HUNTING" envelope by Deraedemaeker on pale blue paper unused, fine