Coal tower and a medallion featuring worker left. Medallion is a copy of the reverse side from the 50 centimes (1952-2001) & 20 centimes (1953-1963) coins in bronze.
Reverse lettering
WATERSCHEI·ZWARTBERG·WINTERSLAG·GENK
150
KOOLPUTTERS
IN OMLOOP VAN 01/5-01/07/83
and various names of coal in different languages inside the
medal
