This pipe was found at home. It has 'DB' written on it and No: K6507. I couldn't find anything about it on the internet. I'm not even sure if it's made of briar. There's a significant crack in the bowl and the air hole is a disaster :D
Looks like briar to me and Design Berlin is the only thing that comes to mind. I have no idea if that was a logo used for that brand so it is a total guess.
Estate pipe from a guy named Cooper who carved his initials on it to commemorate a recent windfall; cracked bowl was from falling out of a DC-10. Nice find! Might be worth checking the undergrowth near the place you got it from.