As you say... it all depends upon what the watch and case really are, but it sounds like a problem with the "detent spring" in the neck of the case to me. I've experienced that with Waltham's in Philadelphia Watch Case Co cases where the spring gets dry and worn and deformed. I carry a very pedestrian 15 jewel 1883 model open-face Waltham in a gold-filled case that has at least 50% of the gold worn off. Even before me it was a well used watch... and I've been carrying it since 1978!
Originally Posted by E. von Hoegh