It is a 5 Inches brass telescope and its leather carrying case. The telescope is primarily made of brass, with a black leather-wrapped section near the eyepiece. It's a handheld, collapsible model, typical of those used in the 18th and 19th centuries for nautical or field observation. When fully collapsed, it's compact enough to be portable, fitting into its accompanying leather case. The case is made of brown leather, embossed with the text "DOLLOND LONDON," indicating the manufacturer and origin, which is a well-known maker of optical instruments.