Sure looks like a capped die example to me...error coins, except double-dies, leave me very confused as to actual value...but are all cool coins to have as a type collection...
This example may be somewhat confusing to those unfamiliar with this error type. The die cap with which this coin was struck had seen many strikes, as evident from the relative equality of transfer of both obverse and reverse detail. It takes a fair number of strikes for the reverse detail to work its way through to the opposite side of the cap, and for the obverse detail to become as indistinct as appears in this instance.
The term "capped die" or more correctly "capped die strike" is non-specific as many different designs and effects are associated with capped die strikes. This particular specimen shows a mid- to late-stage brockage.