Vintage photo restoration via GIMP, small project

For GIMP expert, old black-and-white photo retouching needed, single I have an old black-white photograph scanned in TIFF, the photo has faded with time and has some minor imperfections. I'd want to retouch it, to improve sharpness and detail use GIMP... (Budget: €8 - €30 EUR, Jobs: Digital Art, GIMP, Graphic Design, Image Processing, Photo Editing, Photography, Photoshop)