Apple II vs Apple II+

[Marvin Johnston]

In cleaning out one of the closets, I ran across a number of Apple II+
machines and what I suspect might be an Apple II. The top cover has the
Apple II logo on one of the machines and it looks identical to the Apple
II+. Is there an easy way I can tell the difference between the two
machines? If I indeed have the Apple II, then all I am looking for will
be the Bell & Howell Black Apple II+ to complete the Apple II series of
machines through the Apple //e enhanced.