No, just experience over the last 20 years. It looks to my eyes that this coin has a bit of "bagging" as opposed to wear, which I would expect in modest amounts at the high points (esp. Obv). Actually, this coin would probably have been EF in the "Grand Olde Dayes" of Glendining, et al. Based on photo alone, I wouldn't be surprised to see this in an AU58 holder...