How do I make something flip all the way round...?

I have a graphics object.
I want it to doa full turn all the way round.
To give the impression that it’s turning around.

What I can do is create an object, put another instance on a key frame later, and on that instace simply flip the object horizontoally.

When I play the animation…
It has the effect of doing half the turn.

BUT: what I want is something that flips all the way round!

I’ve played with trying to do this…
But i just cant get it to work.