This movement shown here is a completely unknown (even to the literature) and simple pin lever movement, marked as “OC 1” or “OC Cal. R.1” inside. It has got no shock protection and only two jewels. And as you can see on the picture below, the hairspring regulator is bent in such a large “U” shape, that an effective regulation of absolutely impossible.
|Number of jewels:||2|
Nickel anular balance|
|Balance bearing / direction hairspring:||Counterclockwise|
|Adjust mechanism:||Hairspring key|