Great Britain 1d Lilac with 'INVENTION' Perfin

United Kingdom · 1900 · 1d

The stamp features a profile portrait of Queen Victoria facing left, with 'POSTAGE AND REVENUE' at the top and 'ONE PENNY' at the bottom. It is distinguished by a perfin spelling 'INVENTION' through the design.

This common definitive issue from the late Victorian era was used by G F Redfern and Co., London patent agents, who applied the 'INVENTION' perfin to their stamps to prevent theft and misuse.