The trick is to keep the grain, because that’s the soul of the print, but let the dust die out so it doesn’t ruin the texture. Scan at a high DPI—1200‑2000 is a good sweet spot—and use a matte paper to avoid extra gloss. When you clean the scan, start with a soft brush or a light eraser tool to lift dust, but stop before you erase subtle shadows. If the grain looks too harsh, just add a mild Gaussian blur so it looks like old paper, not a digital ghost. That way the texture stays authentic, but the scan is still usable for your projects.