Offshore International Advertising has created a special 150th anniversary identity for Sir Arthur Conan Doyle, the creator of Sherlock Holmes, as part of an international marketing campaign.

The clean and sophisticated identity is being used within a campaign to market the special Sherlock Holmes themed stamp Mystery Pack from Guernsey Post sold around the world.

The marketing campaign includes direct mail, direct response print advertising, an e-commerce website at www.sherlockstamps.com, pay-per-click advertising, social media marketing via Facebook, Twitter and blog seeding.