HP -10C brag?

[Ren]

Well, it arrived a few minutes ago. USA S/N 2243A09146
It looks it it has been "rode hard, and put up wet"!
With batteries installed, the display lit up with partial and missing digits.
A couple of random key presses later, it showed 0000000 00.
But, I don't know how to turn it off, pressing ON again does nothing.
It did single digit 4-function math okay.
Now, it fell asleep?
That should give me an opportunity to run Self Test/
It looks like it passed!
I'm happy!
Oh, an now it turns off by pressing ON!
Ren
dona nobis pacem