A Penny's Worth

http://www.timeforkids.com/TFK/kids/news/story/0,28277,2021923,00.html

copper
銅貨
The coin is one of a kind. It is the only penny that the Denver mint made out of copper, instead of steel, in 1943.

mint
貨幣製造所
The coin is one of a kind. It is the only penny that the Denver mint made out of copper, instead of steel, in 1943.

equipment
備え
World War II was going on, and copper was needed for equipment.

TFK

Nobody knows for sure why a copper penny was made at the Denver mint in 1943, coin-dealer Andy Skrabalak told TFK.

anonymous
不明の
The coin collector who bought the $1.7 million penny wants to remain anonymous, or unknown.