I'll give you a couple of reasons. The bowl shows signs of "burn through" at the base - that's the black discoloration of the finish - and looks to have been patched. That's not a good thing. That's a very bad thing. The bowl was over reamed and the wood has burned through to the outside. It's another dead pipe, or nearly dead.
You're much better off with a pipe that is in good used condition than a burned out Dunhill. The pipe may say Dunhill, but essentially it's kindling.
If you're going to go the estate route, you're looking for a pipe that has as little wear around the bowl and chamber as possible. The wood should not be blackened to the point where it's better suited as charcoal briquette than a smoking implement. The chamber should not have been reamed out of round. But any estate will need to be thoroughly cleaned and disinfected so that you're not smoking moldy essence of spit and tar.
You would do better to buy a new cobb or an inexpensive, but good quality new briar pipe, and learn more about pipes and condition, than buy a used pipe that has been abused beyond the Geneva conventions by a mindless gorilla. Savinelli, Peterson, Stanwell and other makers have good inexpensive pipes.