Hey I got a B110 parts book from New Zealand delivered today.

I can answer this question.

They are referred to as a "Console Box"

There are 2 types:
a) A flat simple one with a change tray, and a gear shifter boot.

b) The curved one that covers over the bottom of the heater box.

Both sorts had a boot for manuals
Also came in an Automatic option

This was offered in in the following cars:

Sedan
a) option in manual
a) standard for auto
b) 0ption in GX sedan with Datsun plate.

Coupe
a) option in manual
a) automatic
b) Manual 07/72 onwards
b) Coupe 07/72 onwards

I can't see any options for a clock in any of the models. But I've seen the optional clock on ebay a year or so ago, so it may have existed in Japanese domestic models.

Chris