Antique Fairbanks Infallible Coin Scale Detects Genuine and Counterfeit Gold / Silver Coins RARE and Hard to Find. The Fairbanks Infallible Scale Co. Please see photos for condition. The item “Antique Fairbanks Infallible Coin Scale Weighs Measures Gold / Silver Coins RARE” is in sale since Wednesday, May 20, 2020. […]