Previous bad character not relevant, except in reply .—In criminal proceedings, the fact that
the accused has a bad character, is irrelevant, unless evidence has been given that he has a good character,
in which case it becomes relevant.
Explanation 1.—This section does not apply to cases in which the bad character of any person is
itself a fact in issue.
Explanation 2.—A previous conviction is relevant as evidence of bad character.