The 1948-D Lincoln Cent is very common in most grades. Examples in MS64 and lower are fairly common and very inexpensive, with many of them being out there in rolls or bags. In MS65 condition, they become a little harder to find but with enough searching in rolls or bags, examples can be found with minimal effort. In MS66 condition they are a little more difficult to come by but for a small premium, a nice MS66 example can be purchased for just a few dollars or less. In MS67 condition they become scarce, with less than a few hundred surviving and none known in better condition.