Bubba, I'm about as new to computers as I am to coin collecting. Up until a few months ago, I didn't even know what dpi stood for, and, frankly, until some of the members, more or less, took me by the hand, and walked me through the scanning process my pics were nothing more than fuzzy images. I've come a ways, but you and the members will have to bear with me until I get better at this scanning stuff.
I increase the dpi, the contrast, and the sharpness as well as decrease the brightness to better show the detail. Maybe I'm doing too much, or too little.
No the coin doesn't look "washed out" in hand. It still has some of the mint luster - weak, but there.
I can't say if it has been dipped in a solution, but, under 20x it doesn't appear to have any of the fine diagonal scratches that are indicative of a harsh cleaning.
Ralph