Butterfly-shaped item (a buckle) with with a loop on the back side.
Casting
Length - 36,91 mm
Width - 16,99 mm
Thickness - 1,36 mm
Konovalov P.B., Svinin V.V., Zajcev M.A. Mogil'nik Acaj II i nekotorye voprosy izucheniya plitochnyh mogil Pribajkal'ya // Po sledam drevnih kul'tur Zabajkal'ya. - Novosibirsk, 1983. - S. 85-100.