Sekonda wider removal help?

We were somewhere around Barstow, on the edge of the desert, when the drugs began to take hold. I remember Harry Bloomfield saying something like:

I distinctly recall one wristwatch I had where you pulled the winder out and unscrewed it anticlockwise to remove. Hollow shaft, internally threaded.

Grimly Curmudgeon laid this down on his screen :

Not this one, I tried holding the shaft with pliers and turning the winder - thanks anyway.

Could be there's a tiny hole on the plate near the winder, in there is a button that needs pressing down with a pin or something. Holding this button down should release the winder.

But what do I know, coming so late to the thread!