I also latter owned a DHE 12 bore Repro that had 28" BHE barrels with the engraved wedges. Wished I had that one back!
I had one like that as well. Two barrel set, no less. Barrels correctly numbered to the rest of the gun, but with the BHE wedges of engraving. Straight/splinter/DT. I'd take that one back too.
Re the markings on Repro barrels . . . I've seen some with a "cartouche" in the top rib, and others with the Parker Reproduction etc marking stamped on the side of the barrel. Minor difference, I guess.