Rick Harrison and his "Pawn Stars" crew are looking to capitalize on the Super Bowl coming to town -- their shop's hawking some championship rings from recent Super Bowls.
The good folks at Gold & Silver Pawn Shop, featured on the reality show, tell TMZ ... they're selling a Super Bowl ring from the 2007 New York Giants for $77,500.
The '07 Giants beat Tom Brady and the New England Patriots in Super Bowl XLII .