Does anyone have any experience with old baseball cards? A guy I was home teaching for a long time passed away and his wife gave me his HUGE collection of baseball cards. There are a few thousand from the 80s-90s and hundreds from the 60s-70s. Some pretty big names with the old cards too. As far as I can tell they are all in perfect or almost perfect condition in sleeves. How would one go about selling these? I know people get them graded, is that something I would have to do?