File:Greg Koch (signature).png
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![File:Greg Koch (signature).png](https://upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Greg_Koch_%28signature%29.png/800px-Greg_Koch_%28signature%29.png?20180228222317)
Size of this preview: 800 × 478 pixels. Other resolutions: 320 × 191 pixels | 640 × 382 pixels | 1,024 × 612 pixels | 1,620 × 968 pixels.
Original file (1,620 × 968 pixels, file size: 214 KB, MIME type: image/png)