Up for your consideration is an original "bpr WaA497" Kar-98k or K-98k cupped butt plate.  It is stamped with a "51013" just above the lower screw.  This was commonly done on Norwegian captured rifles.  There is another serial "240" lined out below the bottom screw.  Traces of the original red primer on the inside.  It is in good condition and perfect for your restoration.  Why buy a reproduction when you can buy the real thing for a little more.  I can provide additional pictures or answer any questions upon request.  Item sold as is and buyer pays shipping and handling.