Lot 10304 – 1840 (May 1) 1d Mulready lettersheet (A27) turned inside out and used on the 1st May 1840

1840 (May 1) 1d Mulready lettersheet (A27) turned inside out and used on the 1st May 1840 to Derby, showing a fine strike of the red Tombstone « Paid 1 My 1840 » then turned the right way and re-used locally on the 2nd May 1840 showing a good strike of the « Derby MY 2 1840 » at lower left and rated « 2 » in manuscript. A fabulous pre First day usage (5 days before) and believed to be the only known example, a major rarity of the highest calibre; cert. BPA (1998).