Hello,
I found this frag in my frag crate and decided to do a quick clean on it. Glad I did. This is a little more than 1/2 of the nose fuse hole of a 3.8" James projectile. One reason I know it is a James frag is due to the safety wire that can be seen on the outside. This is only seen on the James shells. Since the frag is just over 1/2 of the shell nose the open slot along the fuse hole is less than the diameter and thus the slider and cap won't fall out. The iron on this was so nice that after electrolysis the slider slides freely in the groove. The threads need cleaned a little better for the anvil cap to screw in. The cap and slider are out of my collection and were not found with the frag. I found them in Vicksburg. I thought it was cool and thought I'd share.