French Model 1918 Chauchat light machine gun with Finnish service markings, circa World War I and post war era.
from Poulin Antiques
A Chauchat machinegun in action. The Fusil Mitrailleur Modele 1915 ‘CSRG’ or Chauchat.
Jul 13 1916 IWM (Q 99246) “French troops loading an ammunition magazine into a Chauchat machine gun at Chalons-sur-Marne, 13 July 1916” https://t.co/vmxvxndDty http://twitter.com/ThisDayInWWI/status/1150162990324428800