Everything depend of the year, mint, circulation, UNC, PR or PR like. I selection the better look first. then I go to see for know errors, then I look at the coin to see if I do not find a new thing. I want to mention that we go with a 10 - 20x magnifier first for selection.
this it is an exhaustive plan of selection. Manny others factors could come on the table, but in general those are personal collecting matter.