The 1841-O Dime has the second largest mintage for the entire denomination in the 1838-1852 era. However, it is certainly not the most common or the most available dates of the 1840s, mostly because the New Orleans Mint was far from the cities with the largest concentrations of collectors. Fewer than two dozen Mint State examples are known, most in the MS62 to MS64 grade range. PCGS has certified two MS65 examples of this date, with none better. What is remarkable is how inexpensive the finest known examples are. For instance, the Eliasberg-Simpson-Gardner example sold for $8,225 in October 2014. There are not too many other places where one can find a Top Pop early U.S. coin with a great pedigree for under $10,000.
Most 1841-O Dimes are well-made, however the denticles can often be weak.
1841 was a transitional year for the reverse, The difference can be seen in the buds in the wreath. The old version has closed buds; the new version has open buds. Rarity premiums depend on specific varieties identified by Gerald Fortin at http://www.seateddimevarieties.com/Date_mintmark_variety.htm