The One Penny Die (Die 1) was used to provide the transfers rollers for all the line-engraved stamps from 1840-1855.
The new master die was laid was laid down using a Die 1 transfer roller.
The first new die was rejected-“The impression being so very unlike the stamp now in use”. Mr William Humphry then most carefully deepened the lines of engraving on the Queen’s head.
The work was skilfully done. The first stamp made from the new die- New Die 11 were put on sale in February 1855- One Penny Red Perforated. A magnifying glass is required to detect the difference between two dies. The enlargements illustrate where minor changes have taken place.