Nib: Medium Stub 14k Conklin Toledo U.S.A. Calligraphy
c1924-1931 Conklin Endura, Pearl & Green Stripes, Barrel Imprint: The Conklin Pen Co Tolido Ohio USA Tolido Ohio USA ENDURA D 83592 Reg. US Pat Off Lever-bar Imprint: Pat. Nov.17,1925 Ladies neck pen ribbon ring top
1923: The Conklin Duragraph is introduced.It is well made and efficient lever filler, which leads to the development of the Endura in 1924.