postal note

/P OW1 S T AH0 L N OW0 T/
noun
  1. 1

    A note of postal currency.

  2. 2

    A fixed-sum postal order issued by the USPS between 1945 and 1951.

noun
  1. 1

    A money order purchased at and issued by a post office for redemption at another post office to a named recipient.

Source: https://en.wiktionary.org/wiki/postal%20note, https://en.wiktionary.org/wiki/postal%20order