Brand: General Pencil Co.
Made in: USA
This Semi-Hex looks like the ones I used in the 1980's. NOTE the bottom model here is available for purchase here.
Founded by father-son duo Edward and Oscar Weissenborn in 1889 as the American Pencil Company, it was renamed General Pencil Company in 1923. The family-owned enterprise continues to manufacture pencils today from their factory in Jersey City, New Jersey. Learn more at General Pencil Company website.