Does toothpaste really polish silver coins?

Yes, toothpaste can be used to polish silver coins due to its mild abrasive properties, which help remove tarnish and restore shine. However, it may not be the best choice for valuable or collectible coins, as the abrasives can scratch their surfaces. For preserving their condition, it's often better to use specialized silver cleaners or seek professional restoration. Always test any cleaning method on a less valuable piece first.