400
Read the following passage and identify the main idea:
A penny for your thoughts? If it’s a 1943 copper penny, it could be worth as much as fifty
thousand dollars. In 1943, most pennies were made out of steel since copper was needed for
World War II, so the 1943 copper penny is ultra-rare. Another rarity is the 1955 double die
penny. These pennies were mistakenly double stamped, so they have overlapping dates and
letters. If it’s uncirculated, it’d easily fetch $25,000 at an auction. Now that’s a pretty penny.
The main idea is that the there are rare pennies, worth a lot of money.
(or similar)