This is a better date Barber Dime, a 1900-S certified and graded by PCGS as AU58.  This coin has natural mint luster with light golden toning, a little more toning on the reverse than on the obverse.  The strike on both sides is very strong, and the coin's surfaces are very clean (not cleaned).  Actually scarcer than uncirculated examples, and more attractive than many uncirculated examples.