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|1912 Stockholm||Team competition|
Hjalmar Johan Christoffersen (December 1, 1889 in Copenhagen – December 28, 1966 in Copenhagen) was a Danish amateur football (soccer) player, who played in the forward position. He played one game for the Denmark national football team, as they won a silver medal at the 1912 Summer Olympics. During his career, he most notably played for Boldklubben Frem.
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