Rear admiral's undress coat worn by Nelson (1758-1805) at the Battle of the Nile in 1798. The coat is of blue wool and features a stand-up collar with non-working buttonholes and two small gilt brass flag officers buttons. The entire coat is lined with white linen, with the exception of the collar, which is lined with silk twill, and the right sleeve. The cuff of the right sleeve features a small black silk loop which was used to secure it to the front buttons of the lapels. The back of the collar and shoulders are stained with pomatum or pig-tail grease.