The Geha 790 is one of the most characteristic German piston-filling fountain pens of the 1950s and a strong representative of Geha’s post-war production in Hanover. During this period, Geha positioned itself as a serious competitor to Pelikan, and the 790 reflects that ambition with its celluloid construction, integrated piston-filling system and high-quality 14K gold nibs, many of which show a pleasantly soft or semi-flexible writing character. A particularly distinctive feature is Geha’s reserve-ink system: when the normal ink supply is exhausted, a small control on the feed can release an additional reserve of ink, an ingenious mechanism that became one of the brand’s signature technical features. With its combination of classic 1950s German styling, strong writing performance and unusual reserve mechanism, the 790 is one of the most appealing vintage Geha models for both collectors and regular writers. Geha was a German manufacturer of writing instruments and office products based in Hanover, founded in 1918 by the brothers Heinrich and Conrad Hartmann; the name “Geha” is derived from “Gebrüder Hartmann.” From the 1950s onward, Geha became one of Pelikan’s most important German competitors, producing a wide range of piston- and cartridge-filling fountain pens, many with high-quality gold nibs and the brand’s distinctive reserve-ink system. After financial difficulties in the late 1980s, Geha was taken over by Pelikan in 1990, and fountain-pen production at the historic Hanover works ultimately ended in 1996. Today, vintage Geha pens are appreciated for their solid German engineering, distinctive mid-century design and often excellent writing performance. The pen is in very good, pre-owned condition and has been carefully cleaned. Imperfection: light marks and signs of use.