In 1906, the Denver Mint came on line and began producing coins. Among the denominations produced in that first year were Dimes, Quarter Dollars, Half Dollars, Half Eagles, Eagles, and Double Eagles. Among this list, the Dime enjoyed the largest mintage, perhaps because it was the smallest coins and easiest to produce. Next came the Half Dollar, whose mintage was only slightly less than that of the Dime. After that, mintages dropped off substantially on the remaining denominations.
The 1906-D Dime has a healthy mintage but it is still a semi-scarce date. In typical fashion, the most common grades are MS63 and MS64. Gems can be had for a price, but MS67 and better examples are rare and expensive. The two best examples are the colorful PCGS MS67's illustrated above.