Grafix presses were made circa 1962–1970 by Haas & Kellhofer Maschinenfabrik, Singen-Hohentwiel, Germany. Initially, the company was contracted to build presses for FAG, which then did not have a factory. The agreement ended when FAG moved press production in-house to their new plant in Avenches, Switzerland. Subsequently, Haas & Kellhofer created their own branded machines in five sizes, most of which had either a fixed or adjustable bed or a power carriage.
The GX 4 AN was one of the largest, non-custom proof presses ever made and is comparable to the German-made Korrex Hamburg Kraft (power carriage press).
| Models | Serial No. | Owner | Location | Notes |
|---|---|---|---|---|
| GX 0 | 110 010 001 | Claus Gutsche | Germany, Berlin | |
| GX 0 | 110 010 009 | Beyond Letterpress | UK, Gloucestershire, Stroud | |
| GX 0 | 160 001 009 | Maschinensucher | Germany, Essen | |
| GX 0 | 170 005 019 | Alper İpek | Turkey, Ankara | |
| GX 0 | 170 005 029 | Novepunti | Italy, Milan | |
| GX 1 | 131 010 003 | Drukkerswerkplaats | Netherlands, Gouda | |
| GX 1 | 161 002 003 | Genkse Academie | Belgium, Genk | Adjustable bed |
| GX 1 | 181 040 007 | Private | Germany, Potsdam | |
| GX 1 A-N | 171 001 004 | Hogeschool voor de Kunsten | Netherlands, Utrecht | |
| GX 1 AVM | 111 003 005 | Academie Berchem | Belgium, Antwerp | With transparent film unit |
| GX 1 N | 141 001 064 | Beyond Letterpress | UK, Gloucestershire, Stroud | |
| GX 1 N | 161 001 046 | Knut Ketil Oftedahl | Norway, Sandnes | |
| GX 1 N | 161 001 054 | KABK (Royal Acad. for the Arts) | Netherlands, Den Haag | |
| GX 1 N | 161 001 055 | KABK (Royal Acad. for the Arts) | Netherlands, Den Haag | |
| GX 1 NM | 131 025 012 | Ilse Doodeman | Netherlands, Zeist | Converted to hand crank |
| GX 1 NM | 141 001 080 | GAH (Grafisch Atelier Hilversum) | Netherlands, Hilversum | |
| GX 2 | 102 010 007 | Ruud Huysmans | Netherlands, Heerle | |
| GX 2 NM | 192 010 005 | Typorama | Switzerland, Bischofszell | |
| GX 2 NM | 182 001 003 | Coco | Belgium, Kortrijk | |
| GX 2 VM | 182 031 006 | Till Verclas at Atelier für Druckgrafik | Germany, Hamburg | |
| GX 3 | Eckehart Schumacher Gebler | Germany, Dresden | ||
| GX 3 N | 193 010 013 | The Arm Letterpress | USA NY Brookyln | |
| GX 4 | Dafi Kühne | Switzerland, Zürich | ||
| GX 4 | 194 010 005 | Museum Druckkunst | Germany, Leipzig | |
| unknown | Archivio Tipografico | Italy, Turin |