Commonwealth Consolidated Acts Commonwealth Consolidated ActsA bill issued in Australia which is presented for acceptance, accepted, or payable, outside Australia shall not be invalid by reason only that it is not stamped, or is not properly stamped, in accordance with any law for the time being in force requiring that bill to be stamped, and any such bill which is unstamped or is not properly stamped may be received in evidence on payment of the proper duty and penalty (if any).