Is 2010 penny supposed to have an upside down back?

Yes, some 2010 pennies were mistakenly produced with an upside-down back due to a misalignment during the minting process. This error occurs when the front (obverse) and back (reverse) sides of the coin are not properly aligned. These misprinted coins can be considered collectibles and may be worth more than their face value to collectors. However, the majority of 2010 pennies were minted correctly.