Yes, you are correct.
It IS a pen.
But it's more than a pen.
Do you know, or rather - do you remember what the purpose of the other end of this pen was?
It has become virtually obsolete.
My husband found it in a desk drawer, and when he asked me, I did not know what it was.
HE remembered, but he's a little older than me.
In most of today's households, you would not need to use the top of this pen for it's original, intended use.
Here in our house, however, we still can: