The expression "bank-note" means a promissory note or engagement for the payment of money to bearer on demand issued by any person carrying on the business of banking in any part of the world, or issued by or under the authority of any State or Sovereign Power, and intended to be used as equivalent to, or as a substitute for, money.

[See, explanation to section 489A, the Penal Code, 1860 (Act No. XLV of 1860)].