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Alteration of bill. 
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64. (1.) Where a bill or acceptance is materially altered without the assent of all parties liable on the bill, the bill is avoided except as against a party who has himself made, authorised, or assented to the alteration, and subsequent indorsers. 
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Where a bill has been materially altered, but the alteration is not apparent, and the bill is in the hands of a holder in due course, such holder may avail himself of the bill as if it had not been altered, and may enforce payment of it according to its original tenour. 
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(2.) In particular the following alterations are material, namely, any alteration of the date, the sum payable, the time of payment, the place of payment, and, where a bill has been accepted generally, the addition of a place of payment without the acceptor’s assent. 
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