I collect United States Capped Bust of Liberty Half Dollars, minted from 1807 to 1839. Since no silver dollars were struck for general circulation during that period, these were the largest U.S. silver coins available for commerce. The U.S. mint supplied only a small fraction of the circulating coinage until the late 1840s, so the gap was filled mostly by silver coins from Mexico, ranging in value of 6.25 cents (el medio or half réal) to one dollar (el peso de ocho, piece of eight, or eight réales). I cannot afford the uncirculated (mint state) coins, even the ones that haven't been slabbed and graded, so I collect only "raw" circulated coins, usually in grades very fine or higher, if the price is right.