The Dublin Filter, like its sibling the Dublin Silver, uses only Peterson's better-graded briar. Also like the Silver, the Filter is of limited availability - in fact, while the Silver is produced for the European market, the Filter is even more specific, intended for export to Germany where 9mm filter pipes are at their most popular. Even we here at Smokingpipes.com had to go to the Peterson factory itself to get our hands on these - they are worth it, though. Here we find a design any Peterson aficionado will recognize in an instant, the solid "6" straight Billiard, essentially the English classic, but with a signature Peterson stoutness to the shank.
-- Sykes Wilford