Very early "Perpetual Selfwinding Watch Co" around1930

Today arrived my last aquisition. Just want to share some pics of this very early and interesting Perpetual Selfwinding Watch Co automatic watch. Hardly worn, but still in running condition!!
A piece of watch history, rare to find...



Known as Frey automatic, the watch goes back to 1930. Inside there is an automatic pendulum (!) movement, patented in US in 1932.


Dail has been restored in the past, but most important is the beautiful movement inside.


The pendulum has to swing, so the case back has a special design.



With a size of approx. 40 x 24.5mm, the watch is quite large and feels really good on the wrist.

Good question JimInOz,

to be honest I´m not sure, as I have seen photos of examples with crowns on both sides.
But if you look to the drawing of the patent, the pendulum is on the bottom of the dial.
If you look at the movement shot of my watch, than the crown should be on the left side too.
If not the writings on the movement would be up side down, which is not very reasonable.
I dont know how the dial is fixed on the movement. As I have to go to my watchmaker I will ask her to take a look at it.