The 1888 over 7 Indian Cent is a very popular variety in the Indian Cent series. The 8 digit was apparently struck over a 7 digit on the date. Towards the top left hand portion of the last 8 digit on the date, there are traces of the top portion of the 7 digit. Also, towards the bottom of the 8, there is also a small raised lump which is the lower portion of the 7 digit.
This variety is scarce in all grades and especially in Uncirculated grades, it's practically unknown as there are very few confirmed in Uncirculated condition.