In the following models the logo was simplified by removing the circle, and keeping the "S" surrounded by rays like a sun, in addition the filler button was made in white color to make it more visible. In 1931, driven by competition suffered in previous years, particularly because of the Osmia and its production of celluloid Duofold on behalf of the Parker, also Soennecken began to use this to this material. So the Rheingold series became available, as well as in the classic black, in blue, green, red and brown, with a luxury model in Pearl and Black. The new celluloid models were available in three sizes, 912, 913 and 916, there was also an economic model with the number 305 andd no logo on the cap, available in black, blue, red, green and marbled pearl-edged blacks , and another economic model marked with the number 406.

205 był wprowadzony w 1933 roku, więc pewnie też celuloid. Z kolei model 810, to pióro najbardziej z prawej, było wprowadzone w 1913 roku, więc pewnie ... ebonit?
I faktycznie nad czarnymi piórkami jest napisane Sicherheits-System co jak rozumiem oznacza Safety? I wygląd sekcji charakterystyczny dla Safety.