Modifiche

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.

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.