I picked up a Naval dagger & the tang is ground on each edge. I don't ever remember seeing ground marks on the edge of the tang only billet lines. Here is a pic of one side where it is ground & the other side is ground also. Thanks for any help.

Rocky

IMG_1059.jpg (35.94 KB, 242 downloads)
IMG_1061.jpg (36.38 KB, 243 downloads)
IMG_1066.jpg (100.7 KB, 239 downloads)
IMG_1064.jpg (81.14 KB, 238 downloads)