The Rheingold series was Soennecken's finest line of pens, inspired by the name of the treasures of the saga of 'DerRing des Nibelungen' by Wagner. The Rheingold was Soennecken's reply to the colourful Duofolds and other celluloid pens emerging from America. As well as in classic black, Rheingolds came in blue, green, burgundy and brown marbled as well as a special model in Pearl and Black.
The Rheingold series was characterized by an ingenious take on the button fill system. To operate it you would turn a hard rubber collar to reveal the button, which could then be decompressed to operate the pressure bar within. This system meant there was no need for a blind cap (which would often get lost when removed) and so marked an improvement on the Duofold button fill design. Another emblem of the Rheingold was the decoration on the head of cap consisting of an "S" surrounded by a white circle in turn surrounded by rays.
The pen presents like new, the plastic is bright glossy with little or no signs of age. The hard rubber parts are again glossy and bright and the cap top in particular looks like new. There are none of the usual scratches and marks that you find on vintage pens.