To prevent a coin counting sensor device from being malfunctioned by a mischief, in a coin rolling type selector.

This coin counting sensor device for the coin rolling type selector is adjacently arranged with three sensors in positions opposed to linear rails, in the coin rolling type selector constituted to select a small-diametric coin turned down to a window in a process for guiding rollingly the coin by an opening formed in an apex part of the selector, a circular arc passage with about 1/4 of circular arc formed adjacently to the opening, and the rails sloped downwards toward a front side, formed adjacently to the circular arc passage and extended linearly, one of the sensors is arranged opposedly to a side face of the coin near to the rails, and two of the others are arranged opposedly to the side face of the coin distant from the rails.

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