This is not a mint error per-se but rather a very common type of Mechanical Doubling which does not add any additional value to a coin.
Collecting since 1972. Learning from then on
"Tell me and I forget. Teach me and I remember. Involve me and I learn." - Benjamin Franklin
My Dansco 7070 type set coin count: 45/76




My Dansco 8140,8143-8147 Washington-Quarter Albums



