Unnumbered ones turn up fairly regular on ebay. It would still be matching by default. Or, you could always fix the original. I've done it several times with Mausers to keep the numbers matching.
You can buy a set of dies for what you'd pay for one box of ammo. Cases are easily made from 30-06 and I've used 8mm mauser also in the past. If you plan to shoot it much reloading is the way to go. Don't reload? Maybe a good time to get started. Just my .02 worth.