I guess I've owned this one for maybe six or seven years; it comes out rarely which is down to the small case size.
It's going nowhere without me, it comes out on rare dinner jacket occasions and I'm content to wind it now and then and admire it daily.

 

it is really a hand wonder as you write in the header of your post

 

Oh mea culpa. I have an excuse but I winder weather it's worth bothering with it.