Trephination set, cased, London, England, 1771-1800.  This trephination set had all the necessary equipment to perform surgery on the skull. Also known as trepanation, it is surgical practice with ancient origins. This is a nine-piece set containing forceps, an elevator for lifting up bone fragments, a lenticular to depress brain material during surgery, a brush, a rugine to scrape the covering surface of bones which attach to muscles and tendons, and a trephine with three bits and a key to…