Advice on Pocket Watch

[OxShoeDrew]

Hey all,
These are the finds of late. Anyone know how I should open that pocket watch? It looks like it can be opened on both sides...I'm hoping that means one side has an engraving on it.

Next to the watch is what I think is a silver colonial button. There's a bit of a stain where the shank could have been attached, it's thin like a button, colonial only site, no coins match the size.

The ring is silver!

Thanks!