- round, 16 gauge Steel, shield boss
- center "bubble"
- pre-drilled mounting holes
This shield boss consists of a circular sheet of metal with a round, raised bubble, and four holes around the edge for mounting.
basic Iron shield boss was used throughout the Roman era, from around the 4th BC to the 15th Century AD
a simplified variation of A Lombard shield boss from northern Italy, 7th century (Metropolitan Museum of Art)