An indorsement in order to operate as a negotiation must comply with the following conditions, namely, -
(1) It must be written on the bill itself and be signed by the indorser. The simple signature of the indorser on the bill, without additional words, is sufficient. An indorsement written on an allonge, or on a "copy" of a bill issued or negotiated in a country where "copies" are recognised, is deemed to be written on the bill itself.
(2) It must be an indorsement of the entire bill. A partial indorsement, that is to say, an indorsement which purports to transfer to the indorsee a part only of the amount payable, or which purports to transfer the bill to two or more indorsees severally, does not operate as a negotiation of the bill.
(3) Where a bill is payable to the order of two or more payees or indorsees who are not partners all must indorse, unless the one indorsing has authority to indorse for the others.
(4) Where, in a bill payable to order, the payee or indorsee is wrongly d
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