It has the maker's mark of William Neal (not William Neale). It is marked in four places.
The full hallmark is on the side. The screw and the lid underplate are marked with the lion passant and maker's mark. The bottom of the lid is marked with the maker's mark. It has no monograms or engravings.The glass does have a small hairline crack near the hallmark as shown in the pictures. The top has a very small scuffed spot visible in the pictures.
It measures 3 1/4" long x 1 1/2" wide x 1 1/2 high, not counting the screw. There were two William Neal's, who were father and son (later there was an unrelated William Neale).
The first was active until about 1864. Neal often used a maker's mark that was the same as his fathers', which is WN in a horizontal oval. The item "Antique Silver Guilloche Traveling Inkwell Screw Down William Neal London 1873" is in sale since Wednesday, July 8, 2020.This item is in the category "Antiques\Silver\Sterling Silver (.925)\Other Antique Sterling Silver".
The seller is "crayola789" and is located in Lincoln Park, New Jersey. This item can be shipped to United States, all countries in Europe, Japan, Canada, Australia, South Korea, Hong Kong, New Zealand.