NGC hasn't graded any MS68's to '48-D's. My guess is 66RD but I wouldn't be surprised with an NGC 67RD (equivalent to a PCGS 66RD). It is a very nice Lincoln! Lance. (edited to say, oops...didn't notice the grade was revealed. Nice!!!)
Did not know that. That day, I don't know why, I just graded what I think it should be, not what I thought NGC graded that to be