Posted 08/27/2015 10:42 am
Agreed.
To elaborate more on the 1988-D, the blisters are caused by a chemical reaction between the copper plating and the zinc core. This is especially common in coins that spent a very long time in a warm, humid environment, e.g. a change jar in a garage. I suspect that in the long run (100+ years), this will be the fate of all zinc cents
To elaborate more on the 1988-D, the blisters are caused by a chemical reaction between the copper plating and the zinc core. This is especially common in coins that spent a very long time in a warm, humid environment, e.g. a change jar in a garage. I suspect that in the long run (100+ years), this will be the fate of all zinc cents
