Lousy photos, but that only excuses us, not the seller.
Alas, it's not a Dunhill. The nomenclature actually reads D&P, which stood for David and Paul Lavietes (close kin to Henry). This pipe very probably dates from WW2, and is entirely typical of the company's output. You can find the D&P backstory many places online, including notably in one of Steve Laug's excellent posts (see https://rebornpipes.com/tag/dp-pipes/).