At the end of 1964, Pelikano underwent a fundamental revision (from model 1 to model 2). The nib of model 2 became larger, more elastic, and semi-hooded. The barrel was equipped with an ink window. The cap became friction-fit. Accordingly, the design and construction of adult fountain pens were modified similarly in 1965. All previous cartridge filler models (P25/P15) were discontinued, in turn Pelikan introduced P30 with a rolled gold cap and P20/P12 with a Silvexa cap for the cartridge filler fountain pens. In design and technology, P30/P20/P12 for adults was more a development of the school pen Pelikano (model 2) than P25/P15. Come to think of it, previous P25/P15 were based on Pelikano (model 1). At the time P series were introduced, Pelikan had begun to concentrate on the "Pelikano business"⁽¹⁾. "Parallel to the new Pelikano from 1965, the corresponding adult models P20 and P30 were introduced. As a concession to the supposedly "eternalists", the pens were also offered with piston mechanism under the designation M20 and M30... (bold type by tacitus)"(Pelikan - ein unternehmen schreibt geschichte). Thus, cartridge filler P30 at last formed the flagships of the Pelikan fountain pens⁽²⁾. However, no luxury model was ever produced for the cartridge pens. M100 in all solid gold was produced for piston filler pens, but "P100" was not (P60 all in rolled gold was not produced until 1970).

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P30 had many similarities and some differences with the corresponding piston filler M30.

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• Model name: For cartridge filler pens, "P" was placed before the model number to denote "Patronen-Füllsystem"(cartridge filler system). P30 had a rolled gold cap and a black body. In terms of color and material, P30 was the successor to P25, so to speak, while P20/P12 with silvexa cap were the successors to P15. 

• ​Nib and thermic-regulator: The model had the same nib and  the thermic-regulator system as M30 (please see M30 for more information)⁽³⁾. The only difference from M30 was the bulkhead (please see M30 Fig.5). It had a protrusion with a hole on it to hold the cartridge in place (Fig.5) .

• Body: The body consists of the section and the barrel (Fig.4). The section is same as M30. There is a metal ring on the barrel to hold the cap in place. The barrel is also equipped with a blue circular ink window like M30. The model accepted both long and short standard international cartridge. The barrel was rotated and removed to replace the cartridge. There was no vent hole that existed in P1 and P25/P15. To distinguish from piston filler pens, a short metal cap was attached to the end of the barrel (Fig.3).

• Cap: The model had the same cap as M30.

• Design:The design was same as M30, except for the barrel end (Fig.1,2).

 

In 1966, PK series (PK10, PK30) were introduced (Pelikan-collectibles.com). They were less expensive models with plastic cap (K denoted "Kunststoff"(plastic)) and steel nib.

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In line with the revision of Pelikano in 1968, P/PK series was revised between 1969 and 1970⁽⁴⁾. P30 was redesigned in 1970 (Pelikan-collectibles.com) and continued to be one of the Pelikan's standard cartridge filler pens.

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Note:⁽¹⁾Pelikano was so successful that it became synonymous with school pens.

⁽²⁾In 1950's, the ink business of Pelikan had taken a hit with the spread of ballpoint pens, and Pelikan stopped shipping 5-, 10-, and 25-liter basket bottles for schools and offices. But the ink business was revived thanks to the advent of cartridge pens (Pelikan - ein unternehmen schreibt geschichte).

⁽³⁾P25/P15 had a different feed from P1. P30 had the same feed as M30.

⁽⁴⁾According to Pelikan Schreibgeräte, P12 received the revised nib in 1968, ahead of other models.