Both items appear to be sand cast brass. Both are from a site that has produced artifacts from the civil war. Any help with identification would be awesome.
Colt,
I don't know much about buckles, but the one on the right I would say is tack related.
The one on the left looks like it might be a decorative sash buckle.
Cool finds and there must be other great stuff to find there.
Huntin dog is right. The one on the left is a mid to late 19th century decorative sash buckle. They are often times found near CW camps. The one on the right is from horse equipment. They are GREAT signals!