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Neat. The German word "Essmarke" broadly translates as “meal voucher”, “meal ticket”, or “lunch voucher” in English.
These kinds of tokens were used by employees as full or subsidised payment for a meal and also used at events such as festivals, beer gardens and corporate events to redeem for specific food items between about 1871 and 1948. Also distributed to the underprivileged to obtain food in times of hardship.
The Kur Hotel opened in Petersberg in 1892 as a spa hotel run by the Nelles brothers and was then purchased in 1912 by the perfumier Ferdinand Mülhens who converted it into a luxury spa resort until it closed with outbreak of war in 1939. After the war it was used as the headquarters for the Allied High Commission until 1952 and in 1954 reopened as the Steigenberger Icon Grandhotel & Spa, used by the German government as an official residence for state guests.