What an 1852 Imperial Russian 1 Kopek coin could possibly be doing in France I do not know but it is interesting none the less. The bullet included is a fired British/Commonwealth. 303 with rifling marks visible.
Original WW1 Braas Bullet Pencil For Princess Mary Brass Gift Tin Silver Top
WW1 SOMME TRENCH MAP (SERRE, 4 GOSPEL COPSES, GOMMECOURT, MONCHY-AU-BOIS etc)
WW1 Somme battlefield Relics
WW1 Somme Battlefield Finds
WW1 Somme Battlefield Relics Telegraph Ceramic Insulating Parts & Wire Signals