Beginning in [[1962]], models were produced with [[inlaid nib|inlaid nib]] (patent {{Cite patent|DE|1161500}}) similar to [[PFM]] by [[Sheaffer]], called ''[[Goldschwinge]]''. As the 1960s continued, several variants were produced, and cheaper lines of [[hooded nib]] pens. The [[piston filler]] system with ink reserve mechanism remains as distinctive. From [[1961]] were also introduced [[cartridge filler]] models, maintaining the ink reserve through the use of two separate cartridges (see patent {{Cite patent|DE|1215025}}), as for the [[Duo-Cart]] of the [[Aurora]]. | Beginning in [[1962]], models were produced with [[inlaid nib|inlaid nib]] (patent {{Cite patent|DE|1161500}}) similar to [[PFM]] by [[Sheaffer]], called ''[[Goldschwinge]]''. As the 1960s continued, several variants were produced, and cheaper lines of [[hooded nib]] pens. The [[piston filler]] system with ink reserve mechanism remains as distinctive. From [[1961]] were also introduced [[cartridge filler]] models, maintaining the ink reserve through the use of two separate cartridges (see patent {{Cite patent|DE|1215025}}), as for the [[Duo-Cart]] of the [[Aurora]]. |