Here we have a large cast brass belt buckle, a silver dime dated 1838, a suspender or shoe buckle (I'm not sure which), a button, a decorative finial from a lock, and a very primitive key. All found in the old gold fields around Sacramento.
Those were mainly civilian patriotic buckles and usually associated with the Gold Rush era. They are typically thinner construction than a military buckle.
How far apart were the tongue and wreath from each other? A lot of guys will find one half but not the other and will be determined to keep looking for the missing half. You did good by snagging both.
The tongue and wreath buckle pieces were only five feet apart from each other. Yes I was very lucky to find both parts so close together.....I may return to this spot soon to try and find a box for the key! Thank you to all for looking!