What this coin looks like (obverse, reverse, mint mark location, special features, etc.):
There were two major varieties of the 1842 Braided Hair Large Cent (Penny). One variety had a Large date as depicted above while the other had a smaller date. The difference between the 1842 Large Date vs Small Date Penny 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