Read the passage:

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.

answer the following questions:

1. summarize the paragraph in one sentence.

2. what would be an appropriate title for this paragraph?

3. what is the subject?

4. what is the main idea?