to CCF. It is caused by either a 
Posted 03/25/2016 4:05 pm
The letters were not added on the reverse design. they are all part of the design. So as John1 mention they might be filled in with grease, or just polished away. They were not forgotten. Some collect these, but they are not a die error. More like a die event. 1. The devices were polished away or 2. The die had a bit of grease in that area. But as John mentioned: Any sign of the letters remove this from being collectable to those who collect these.
