Ron Guth: 1808 Half Cents are found with a "normal" date and an overdate (last 8 over a 7). "Normal" is in parentheses because the date is actually quite unusual -- the final 8 of the date was constructed by punching the zero of the denomination into the coin twice. Thus, the final 8 does not match the first 8 at all.
The "Normal" 1808 Half Cent is one of the more common dates in the series. While several Unicrculated examples are known, none have earned the Red-Brown or Red designations. Thus, the collector is left with mostly Brown examples, with only a trace of original mint red at best.