Shagreen Suitcase Travel Inkwell

Travel inkwell designed as a suitcase and covered in shagreen. Leather was listed as shagreen but may be reptilian (snake, etc.) based on texture & colouring, or perhaps manta ray if not shark; need to research it some more. Button to open case appears to be ivory or bone. All trim is brass. Original bottle is present. Mechanisms all working fine. Late 19th/early 20th century.