Brand: Blackwell-Wielandy Co.
Made in: USA
I've got both a lefty (number 2.5 pictured here) and a righty No.2 for this same model.
Founded in 1896 in St. Louis, Missouri. On Dec 24, 1901 Frank H. Wielandy joined A. M. Blackwell and his brother, Paul J. Wielandy, in organizing what was still known as the Blackwell-Wielandy Book & Stationery Company. In 1907 they constructed the Blackwell-Wielandy building in St. Louis which remains to this day. B-W did not manufacture their own pencils, but instead they were produced by the Wallace Pencil Company. (Thanks for the info., Mark!)