Offered is an used and working 500 note bill box for Mars 2000 series dollar bill acceptors.  This bill box has an advantage over the typically used 300 note boxes because the money is removed from the side instead of the top and it eliminates the issue of the money falling out of the box when it gets full in a machine where the validator is mounted upside down. This bill box will fit the following models of validators - AE2401, AE2411, AE2451, AE 2402, AE2402, AE2431, VN2301, VN2311, VN2501, VN2511, AE2601, AE2611, AE2631, AE2811, AE2801, etc.