| artist | ALBERT RENGER-PATZSCH |
| biography | German,1897-1966 |
| title | Maschinenhammer |
| date | 1927 |
| technique | Gelatin silver print |
| size | 23,1 x 16,7 cm (9 x 6,5 ") |
| description | 3 Stampesd, titled verso |
| from | Industry |
| edition | Printed 1947/48 |
| provenance | Wilhelm Arnholdt Estate |