After switching characters and escaping the first couple of machine gun attacks, this item is just outside the next trench tunnel.
"All troops were paid in their country of origin's currency and paid compensation in the local currency. The British earned 1 shilling a day (around 3.21 GBP /5.42 USD in nowadays currency), the standard "King's Shilling", and 20 francs every fortnight. These 20 francs had a face valueof 40 pounds (roughly 50 euros - 70 USD) and were used as the main currency with the locals eager to barter whatever few goods they could trade. Business always prevailed, so locals near the combat zone would agree on payment in foreign currencies as well."