Harry G. Robinson, of Schuylkill Haven, Pa., has taken measures to secure a patent for an improved Coin Detector, which, from its portability, can likewise be used as a receptacle for coins and bank bills, thus superseding the employment of a port-monnaie. It consists of an outer cylindrical case, containing a likewise cylindrical gauge box, w hich is fitted with an aperture at one end of the proper size, to receive a genuine coin, so that if the counterfeit be larger it cannot pass through. For testing by weight, the outer case is made to serve as a balance, for which purpose a pair ot clamps that are kept insidare withdrawn, and the small points inserted in fulcrum holes one on each side, which latter are placed at such a distance that the case