The barrel band markings for maker and lot are, I believe, indexed under the woodline. If you can find a GeCo or other replacement barrel that would be best, or anything '40-42 dated and WaA214. Some of these were finished by Gustloff, thus if your rifle is later '42 and bears a WaA 749, then a Gustloff barrel would work. However, the barrel would be serialed to the rifle.
One clarification to Sn's inquiry: Sn, a dufflecut does, IMHO, detract a little from value, though not much, and to more than a few, not at all. I don't think properly repairing a dufflecut vs. leaving it alone makes much difference, or if anything, "helps". I base this on nothing else being done to the wood, i.e. refinishing, etc.