A Trio of Personal Accessories Comprising a Cased Set of Mathematical Instruments, a Sheaffer's Ballpoint Pen and a Folding Pocket Tool

This group lot consists of three distinct personal and professional accessories. The first is a cased set of mathematical drafting instruments, including dividers, compasses with interchangeable steel and ink attachments, and ruling pens. These instruments are constructed from brass and steel, housed in a rectangular hinged case with a black textured exterior and a dark velvet-lined interior. The second item is a vintage ballpoint pen by Sheaffer’s, identified by the engraved lettering around the centre of the polished silver-toned metal barrel. The pen features a tapered bullet-shaped design characteristic of mid-20th-century styling. The final item is a slim folding metal pocket tool, likely a nail file, decorated with an engine-turned diamond pattern on both sides of the handle and featuring a blank circular cartouche intended for initials.