This is a A.Schild (AS in an oval on the dial side like the older ones on Roland's database) on the dial side. Nothing is visible under the balance, and I don't fancy taking it off for a better look as I am still not very good at getting them back in It does have another logo on the dial side, which is in a shield, and which I am completely unfamilar with.
So, who knows what cal. it is? Seems not to be in Roland's database, although the dial side bears a passing family resemblance to some of the 3XX 10.5''' range.
Seems like a very neat, good quality movement.
I was trying to get a feel for the age of the watch it was in - it's from a hinge cased Rotary (with a very tired dial). But now I am curious and just want to know, and I am sure some of you are up for the challenge