No, but it is
part of 1st century AD
Roman horse harness fittings. It is hard to tell exactly what function/type of item (could be
part of junction ring strap loop, strap end or
weight,
part of a hanger for a pendant, etc.) but the design is the so-called "waisted
type" which was used from the Augustan period to the early second century.
Bits like yours are common finds on
Roman cavalry sites occupied in the first century.
SC