The ends are open, and the circle is irregular. The section is round. Roughly incrusted.
By date unknown: with General Luigi Palma di Cesnola (from Cyprus); May 16, 1872: purchased by MFA from General Luigi Palma di Cesnola for $ 1,704.39 (this figure is the total price for MFA 72.1-72.473 and 72.4871-72.4900)
Museum purchase with funds donated by subscription