A traditional ring with the skull - "Battalion of Death"of the Imperial Russian Army

A traditional ring with the skull of the shock detachments of the Imperial Russian army - "Battalion of Death". The ring is made in the traditional style of that time: the skull is held on the bones that are entwined with two snakes. One of the snake's head is broken off. The ring is made of white metal and has several hallmarks, one of the hallmarks reads "AR" and is most likely made in Reval, by a local craftsman, at the end of the First World War, or at the beginning of the Civil War. And may be ordered by soldier or officer who served in Naval Battalion of Death, or in 1st Russian Women's Battalion of Death of Maria Bochkareva, or any other unit which has been located at that time in Estonia. Has traces of wear and tear due to heavy use.