What this coin looks like (obverse, reverse, mint mark location, special features, etc.):
One major variety is the 1855 Braided Hair Large Cent (Penny) with upright 5's as depicted above. The difference between the Slanted 5's vs Upright 5's is depicted below in the example comparison image of the coins:
Coin valuation chart: Typical coin prices, values and worth per grade or condition - in USD