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 smaller and petite liberty head on the obverse and also smaller 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 valuation chart: Typical coin prices, values and worth per grade or condition - in USD