my grandfather once told me a story about how as kids, they would take old pocket watches, tie them on strings and swing them at each other trying to get the watches to smash. yeah, makes me cringe too at all the cool watches that met their demise. this type of stuff may explain why you found one peice far away from the other!
Few days ago, I have founded the antique pocket watch from my grandfather's locker. It's looking so old at least 100 years old. It is made by Waltham watch company. It's looking very heavy and well-designed.