Got this from Pete deC because it was “different”.
Bunter has obviousley been ground to remove the “NUM”. It may not be evident in the photo, but the part where the grinding was done is rough and shows grind marks which is not typical of ground bunters.
Round nickle primer is not typical of WBY cartridges. Bullet looks like a Hornady Spire Point but I know that WBY used Hornady’s in some of his early loadings so this feature may be OK. Looks factory original.