In June 1933, Günter Wagner changed the sealing system (Pelikan-collectibles). According to Pelikan Schreibgeräte, two seals and two vent holes system had disadvantages. The lateral seal would deteriorate with friction caused by screw on and off actions, and the second vent hole was required to ventilate the grip section, which led to the increased cost. As a matter of fact, the lateral seal was no longer necessary, because the diagonal seal worked very well. Günter Wagner decided to abandon the lateral seal. Specifically, the ring groove was added to the inner wall of the cap tube (Fig.6 arrow head) and the grip section was tapered with its flat side edge removed (Fig.5 arrow head). As a result, the side edge no longer rubbed against the inner wall, and one vent hole was capable of both equalizing the pressure of the nib unit section (Fig.6 red arrow) and ventilating the grip section (Fig.6 blue arrow). Thus, additional vent holes also became unnecessary and abandoned. The new sealing system might work very well. It had not been changed for almost 5 years.
 
In 1934, the product range was further expanded. Mechanical pencil (model 200) and its short variant (model 210) were introduced. They were named “Auch Pelikan” (auch; also), because they were “also” Pelikan writing instruments (Pelikan official site).
 
The nibs still had been outsourced. According to A History of Pelikan, “Beginning in 1924, Montblanc relied on Pelikan for ink, and Pelikan, which did not have its own metal working facilities before 1935, relied on Montblanc for nibs”. Presumably, Günter Wagner started their in-house nib production in 1934 or 1935.