Advice to a newbie (and all the other culprits!) - it's really helpful if you post a couple of photos (just stock google images) for comparison - it "draws people in" and makes it more likely to get reponses. Plus I had no idea what a "115200" was until I googled it - thought it sounded like an AP number, but it's apparently a Rolex one.
115200 (one of the many different variants);
15200 (one of the many different variants);