What this coin looks like (obverse, reverse, mint mark location, special features, etc.): This variety of the 1843 Braided Hair Large Cent (Penny) features a larger and more mature liberty head on the obverse and large letters on the reverse of the coin.
The difference between the Petite Head vs Mature Head is that the petite head is smaller and rotate more in a counter-clockwise direction while the mature head is larger and rotated more clockwise as depicted below in the example comparison image:
The difference between the Large Letters vs Small Letters on the reverse of the coin can be seen below in the example comparison image of both coins as well:
Coin value chart: Typical coin prices, values and worth in USD based on grade/condition