Newone,
I use a very inexpensive scanner, Epson Perfection 3590 Photo Scanner. I bought it several years ago for 99.00 US. All my dags are mounted under glass as soon as I finish gilding, I use cheap glass so there are alot of scratches and imperfections that get picked up in the scan. I do photoshop those spots as best I can but keep the real imperfections and contrast as close as possible in the digitized image. You just have to find a scanner that scans at an angle to reduce the reflection.
PS – I really have enjoyed watching your progress on the forum!