Sword of Trust (2019) on Netflix

Cynthia and Mary show up to collect Cynthia's inheritance from her deceased grandfather, but the only item she receives is an antique sword that was believed by her grandfather to be proof that the South won the Civil War.

Mel, a cranky pawn shop owner, and his slacker assistant Nathaniel reluctantly get involved with a fringe organization that believes the South won the Civil War. Mel agrees to facilitate a sale between the group and a couple who inherited a sword that could prove the group is right.

—texasboyy