USA 1907-O Barber Dime, Fine.
Coins are named in strange ways. Normally, they are named after the design elements (i.e Walking Liberty Half Dollar, Buffalo Nickel, etc.) or the person on the coin (i.e. Washington Quarter Dollar, Franklin Half Dollar, etc.). Sometimes, however, they are named after the designer (i.e. Morgan Dollar, Paquet Double Eagle, etc.). Technically, the Dimes of this style, issued from 1892-1916, should be called Liberty Head Dimes, but for some reason they were named after their designer, Charles Barber. The same is true of the similarly designed Quarter Dollars and Half Dollars of this period.
The Barber Dime series is fairly large, mostly because of the variety of mintmarks that were used. The real stopper in this series is the exceedingly rare 1894-S Dime. Other key dates include 1895-O, 1897-O, 1901-S, and 1903-S. Mid-grade Barber Dimes in VF or better are very scarce. For some reason, it is easier to find most dates in Good condition or Mint State than it is to find a nicely balanced Extremely Fine.