Abstract: The present invention is directed to a clamping device for a coin bag that receives coins from a coin exit region of a coin processing machine. The clamping device includes a mounting structure that is located at the coin exit region. The mounting structure has first and second outer surfaces that are generally angled with respect to a vertical line. A holder member movably mounted with respect to the mounting structure between an opened position and a closed position. The holder member has first and second inner surfaces generally opposing the outer surfaces of the mounting structure when the holder member is in the closed position. A bag receiving region is defined between the first inner and outer surfaces and between the second inner and outer surfaces. The bag receiving region decreases in size when the holder member is moved from the opened position to the closed position where the bag is clamped tightly between the inner and outer surfaces.