9th May 1840 Penny Mulready uprated with Penny Black (Fault)
1840 Penny Black usages to Uprate Mulreadys Mulready 1d letter sheet A18 uprated to 2d for weight up to 1 ounce with 1d plate 1a used on Saturday May 9th 1840 the Fourth day of authorised use from London to Carlisle. This is the only uprated One Penny Mulready recorded on this date. The adhesive with cosmetic repair. RPS Cert. Ex Mayflower Grand Prix Exhibit and illustrated on page 50 of The worlds First Postage Stamp By Alan Holyoake FRPSL