I collect artifacts/coins as a hobby, and I often come across things that are undocumented/unattributed. Saw the Met had an open access program and wanted to recreate that feeling with more artifacts:)
It's pretty nondescript but that specific piece was from a pretty famous Avar horde uncovered in Albania. There's a sizeable collection at the Met with things that look similar. Keep an eye out for the rivets and rectangular gold sheets like that, they're belthook designs for nomadic riders!