129. Any banker paying a cheque crossed generally otherwise than to a banker, or a cheque crossed specially otherwise than to the banker to whom the same is crossed, or his agent for collection, being a banker, shall be liable to the true owner of the cheque for any loss he may sustain owing to the cheque having been so paid: Provided that where a cheque is presented for payment which does not at the time of presentment appear to be crossed, or to have had a crossing which has been obliterated, added to or altered otherwise than as authorised by this Act, the banker paying the cheque in good faith and without negligence shall not be responsible or incur any liability nor shall the payment be questioned, by reason of the cheque having been crossed, or of the crossing having been obliterated or having been added to or altered otherwise than as authorised by this Act, and of payment having been made otherwise than to a banker or to the banker to whom the cheque is or was crossed, or to his agent for collection, being a banker, as the case may be.