Sherlock Holmes Stamp Set

Just completed are these exciting Sherlock Holmes stamps by Keith Robinson for Guernsey Post.
Explains Keith “The brief was to create an issue of stamps for Alderney, that commemorate the 150th anniversary of Sir Arthur Conan Doyle, but which focus on Sherlock Holmes. Although the theme has no local link to Alderney, they wanted to incorporate some local scenes. It was suggested that the stamps could tell a story and that a special 'invisible' printing technique could be used to incorporate a hidden image that collectors could find using a special lens.”