PARKER # 5 spiral , eyedropper, black hard rubber , concave section and over-feed ( c. 1892 - 1897 ), PARKER unnumbered , eyedropper, red and black mottled hard rubber, concave section , and over-feed ( c. 1892-1897 ), CENTURY , eyedropper, cable twist pattern , red and black mottled hard rubber, taper cap , concave section and over-feed.

The Century Pen Company was incorporated in Wisconsin in 1892 , with William F. Palmer as President and George S. Parker as Secretary . In 1894 , Palmer and Parker  sold 50% of the interests in the company to J. N. " NELS " HUMPHREY.