On This Day:  May 16

1866 -- U.S. re­places its half-dime coin with a five cent piece, af­ter tests find that trans­ac­tions go more quick­ly with­out the ex­tra math step.

1974 -- Josip Ti­to is named Pres­i­dent-for-Life of Yu­goslavia, a ti­tle he would hold for five years.

15 | May | 17