I recently acquired a Le Creuset doufeu / dutch oven. I can find similar models online, but none that match the exact style and size. It's oval, approximately 5 quarts (maybe closer to 5.5 in actual volume), and measures about 11 x 8.75 x 4.25" not including the handles or lid. It seems to be of good construction, is in good condition, and it has the le creuset name stamped on the bottom and lid. But there's no telltale "diamond" on the bottom, and there are some smudges/drips of red enamel on the rim.
Several pictures are attached. Any thoughts?