Nib: Medium 14k No.33
Sheaffer's Blue Cap & Barrel with g/f trim
After the introduction of the Snorkel in 1952, Sheaffer relegated the trusty Touchdown system to entry-level pens, modifying the feed with an ink channel for cleaner filling. Sheaffer called these pens "Tip-Dip" pens.
Tip-Dip Touchdown pens, made from 1952 through about 1963, are cleaner filling than their earlier siblings. Because these pens have an ink channel in the end of the feed, only the nib tip needs to be immersed to fill, leaving the section ink free, and only the nib needing attention.