We can pretty sure classify the pipe as a Parker-Hardcastle product: such the stamping “MADE IN LONDON \ ENGLAND” is typical for this Dunhill subsidiary. Actually there are no other English company with the same COM (Country of Manufacturing) in trustworthy sources, but please correct us if you know something.
The pipe marking is “MADE IN LONDON \ ENGLAND”. The length is 13.2 cm (5.2″), bowl’s height is 4.5 cm (1.77″). External diameter of the bowl is 3.3 cm (1.3″), internal diameter is 1.7 cm (0.67″). The depth is 3.6 cm (1.42″) and this pipe weights 35 gr. Briar, vulcanite stem, no filter. We had to patch a small chip near the end of the shank – you may note under a bright light.