Gold hallmarks on Pocket Watch

We have a pocket watch that has what appears to be some type of hallmark or makers mark on it. The mark is very small but appears to be a left facing profile of a young boy or girl with a cap on it, with some kind of stones or jewels around the cap.

Then below that there is the K on top of the 18. There is a chain attached to the watch and it has a 19 on top of PS and 17 below. The chain also has a P before (to the left) 14k with an S to the right. We do not know if the chain goes with this watch or not.

Any ideas on where to start?
Thanks,
Patti Knox