The Dunhill White Spot Guarantee

The Dunhill White Spot Guarantee is the name given to the replacement pledge associated with the white dot on the stem of Dunhill pipes. Its importance for dating lies less in the guarantee itself than in what it produced: defining a renewal period required a mark that could document when a pipe had gone on sale, and that need opened the path to the year-code system collectors rely on today.

The Need Behind the Stamp

For a brand to set a limit such as "within twelve months," it needs a way to show when that period began. In the counter of a single London shop, this information could live in the seller's memory; it could not in independent distributors scattered around the world. Dunhill began stamping pipes with a numeric year code in 1922, and also marked pipes replaced under the guarantee with an additional "EX" stamp. Together, these two marks made it possible to police both the time limit and the rule that a replaced pipe would not be replaced again.

Pipes made before 1922 carry no year code; dating them instead relies on changes in the form of the "DUNHILL" and "LONDON" lettering — a dotted or dotless "A," an arched arrangement, the length ratio between the two words, the tail of the "D." For a breakdown of these details, see the entries on Dunhill Patent Stamps and Dating and Dunhill's Additional Stamps.