This looks to be a chatelaine but is missing the clip attachment at the end of the chain. These were/are used by women to hold their pocket watch, keys, etc. If it is sterling, then there is a definite value just in the silver content. Beyond the raw material worth it looks like a nice vintage piece a watch collector might be interested in.
I forgot to add the wide part clips over a belt and the watch would be on the other end of the chain. The clip for the watch is missing from the end of the chain.