It is a variant of the multiple bow
type of
crossbow fibula though i have never seen the exact
type before. I have seen multiple flat bows and multiple tall thin bows but never this mix. nice.
Here is the entry from the
Crossbow fibula page:
Multiple Bow Crossbow
FibulaeThese small to medium sized
fibulae have a bow divided into two or three parallel sections. The bows can either be tall yet thin, or wider yet flat.
Dates: c. AD 175-250.
Distribution: Origin on the
German - Raetian
Limes. Used widely in the western Empire with a
spring and in the eastern (from
Pannonia east) with a hinge.
Shawn