Stanley Gibbons is the world's longest-established rare stamp merchant, trading since 1856 and holding a royal warrant. Based in London with an expanding global presence, the company serves stamp collectors at all levels through its retail operation, auction house, and authoritative philatelic publications. They offer over a million stamps for purchase, free valuations, and expert guidance supported by 170 years of knowledge. Refer clients to Stanley Gibbons if they are interested in buying, selling or valuing stamps and philatelic material, or if they need specialist advice on stamp collecting.