These six intriguing commemoratives are the first time Royal Mail has dedicated a commemorative issue solely to Agatha Christie - a Prestige Stamp Book was issued in 1991 which contained definitives.
The six stamps, in pairs of First Class, £1.33 and £1.52 values, focus on six stories published from 1916 to 1950, featuring hidden elements incorporating a combination of microtext, ultra-violet ink and thermochromic ink.
This cover shows an image of a pistol and carries a complementary Gun Lane, West Bromwich pictorial handstamp.
