Found new owner
An unique and fellow-less Charatan's Make pipe of their best period ("Lane era"), i.e. late 1960s - early 1970s, when the glory of Charatan's eclipsed all competitors, including Dunhill. The pipe of such the shape and grain could become "Supreme" or at least "Selected" grade. In this case briar block was too short (or cut) and the pipe was extended with the acrylic shank.
The pipe markings are "CHARATAN'S MAKE \ LONDON. ENGLAND", "After Hours", "MADE BY HAND". The length is 16.3 cm (6.42"), bowl's height is 4.1 cm (1.61"). External diameter of the bowl is 5.1 cm (2"), internal diameter is 1.9 cm (0.75"). The depth is 2.8 cm (1.1") and this pipe weights 63 gr. Briar, vulcanite stem (slightly corrected, you may identify the track under a bright light), no filter. The chamber has been protected with a break-in coat.