Top three calculators ?

[hth]

1) HP-41CX halfnut
2) HP-41CX halfnut
3) there is no number 3

On the table are also:
A HP-41CL is eating batteries and needs to be updated, so it has been out of batteries for quite a while now.
A HP-16C which is not being used as the HP-41 does it better.
The HP-48GX? I have no idea why it is even on my table, I should probably toss it in a drawer somewhere.

Håkan