French WWI Trench Art Bullet, Poilu Souvenir, Hidden Nail File

Original era manufacture. A really neat WWI souvenir, using a 30 caliber bullet & casing, with a 1914 headstamp. Attached to the base of the projectile is a tiny nail file. Nicely engraved on the side of the casing is, Souvenir d'un Poilu.