Bradley - here's a link (PCGS Photograde Online - Estimating Coin Grades Has Never Been Easier) to a useful resource you can get online. But Chris offers a good reference text that might be more beneficial for quick lookups and for learning about grading on the whole. The coin you posted would probably grade MS but there are a few problems. Multiple nicks and corrosion/stains in obvious spots draw the eye away from key focal points. It is generally thought that the obverse sets the grade and the reverse goes along for the ride. I'm not sure of that and I include it when I'm setting a grade for a purchase I might make. And the desirability for a specific date/mm can affect how the graders will grade a coin (it's reached by consensus). And while that shouldn't factor in...it does. Spend any time at Heritage Auctions you'll see some wild grading...some too conservative but more quite liberal. Also - high grade Zincolns can draw incredible premiums. If you catch one early and prior to hydrozincite...you could have a nice payoff. The best thing to do is to go to Heritage Auctions, PCGS, other TPGs, and Ebay Coins (for sales figures) to get an idea on how much folks MIGHT pay. Unless you have a very high MS coin, it would probably not be worth having slabbed...unless you get it for a reduced price.
