This antique tortoise shell gentleman's etui, also known as a necessaire, is a small, portable case used to store personal items such as writing instruments, grooming tools, or other small objects. It was a popular accessory for men in the 18th and 19th centuries, and was often made of materials such as leather, silver, or gold. The design of an etui can vary greatly, but they are often intricately decorated and may include intricate engravings or monograms. The use of etuis declined in the 20th century, but they remain popular collectible items due to their historical significance and craftsmanship. This one is missing some of the tools but still has a glass bottle in tact.