John J. Keefe, 22, 20 block of Manahan St., Norwalk pleaded guilty in the Erie County Court of Common Pleas and was sentenced to 10 months in prison for the crime.
In November 2006, Keefe stole $500 from a safe kept by his 70-year-old grandmother.
The stolen bills were kept in a gun safe in the Milan woman's residence. The bills, ranging in denomination from $1 to $100 included several rare silver certificates.
A safecracking charge against Keefe was dismissed.