Ron Guth:
The 1855 Half Cent has the third highest mintage of the Braided Hair series. It is a common coin in most grades, up to and including MS-64. Gem Mint State examples are scarce but not rare. Of all the dates in this series, the 1855 is the most common in full Red condition...by far. PCGS has certified over two hundred Red examples, mostly in MS-64. Thus, for type collectors, this is a go-to date for exceptional color and quality.
Both of the 5's in the date are slanted, which was typical of the 1850-1855 Half Cents. In 1856 a new font with an upright 5 was used.
Only one die variety (Cohen 1) is known for this year.