The 1806 Pointed 6, No Stems Half Dollar is a popular, easily-recognized variety in a year full of varieties. In this case, the 6 is pointed and there is no stem in the eagle's left talon (viewer's right). The shape of the 6 was controlled by the decision of the engraver -- he picked up and used either a Pointed 6 or a Knobbed 6 punch. The missing stem was an oversight on the engraver's part -- the stem was not a part of the larger punch that included the eagle and clouds. The engraver's job was to add the stars in the field above the eagle and the stem.
This is one of the most common varieties of the year, which means that collectors will have no difficulty locating an example, even in high grade. The PCGS CoinFacts Condition Census starts at MS-62 and goes to MS-65, a remarkably high level of condition for a classic American coin.