This is a selection of 20 vintage 1970s used Art Lettering and Drawing Calligraphy Pen Points Markers each marked ROSS F. GEORGE SPEEDBALL HUNT MFG. CO. Made in U.S.A. I found “The Speedball pen was developed and patented by sign letterer Ross F. George of Seattle. His square-tipped pen could make broad and thin lines. George took the patent to the C. Howard Hunt Pen Company in 1915.” I am including five B-0, one B-1, two B-2, five B-3, four B-4, one B-5 and two B-6 . They are used with wear, scratches, ink and rust. They were not tested and have copper colored tops. They were cleaned.