Q. David Bowers (edited and updated by Mike Sherman): This variety is an adaptation of the previous 1809-1827 style and is the same except for certain minor modifications. The diameter was reduced slightly (about 1mm) and the border has denticles spaced closer together than on the previous type (although some transitional pieces have the old denticle style). The stars are slightly smaller and there is some subtle restyling.
Dimes of this format were made from 1828 thorough 1837 inclusive. No dates are rarities, although there are several elusive varieties within the range. Examples are available in all grades from Good through Uncirculated, with Very Good to Very Fine being the most often seen. Uncirculated pieces, particularly in the higher states, may take some searching but are available for a price.
-- Reprinted with permission from "United States Coins by Design Types - An Action Guide for the Collector and Investor" by Q. David Bowers