Vintage probably 1930s w.a.h.l USA ever sharp silver plate propelling pencil some minor age related wear 8 cm tall 1 cm round very collectible would require lead to be used unusual to have a hanging hoop rather than a clip 
The Wahl Eversharp, a popular propelling pencil, has a history rooted in the early 20th century. Charles Rood Keeran, a native of Bloomington, Illinois, is credited with inventing the Eversharp in 1913. He initially contracted with the Geo W Heath Co. for production, followed by a partnership with the Wahl Adding Machine Co. in Chicago. By 1915, Wahl gained controlling interest in the Eversharp company, leading to the name change to "Wahl-Eversharp". 
Here's a more detailed look at the history: 
Invention and Early Production:
Charles Rood Keeran, an inventor and entrepreneur, developed the Eversharp propelling pencil in 1913. He initially contracted with the Geo W Heath Co. in Newark, New Jersey, for its manufacture.
Partnership with Wahl:
In 1915, Keeran partnered with the Wahl Adding Machine Co., leading to Wahl gaining controlling interest in Eversharp.
Wahl-Eversharp Formation:
The company was officially renamed "Wahl-Eversharp" after Wahl's acquisition.
Success and Production:
The Eversharp pencil became highly popular, with over 12 million units sold by 1921.
Continued Evolution:
The Eversharp brand continued to evolve, and was eventually acquired by Parker Pen.
Discontinuation:
The Eversharp name was used for various accessories, but was eventually discontinued in 1999.