I've been collecting since 1996 and this was one of the grenades on my hit list. Luckily it was just donated for use in my training class. Of course, it's the US Shinkle grenade from 1919. Not too many of these floating around and from what we have seen, they usually only appear in a few East Coast states.
Once I have the time, I will x-ray it and post those too.
Once I have the time, I will x-ray it and post those too.