Money Order question

[David Merrill]

Is there a difference in a Postal money order and one issued by a bank or private institution (Western Union, Walmart, etc)? It appears the postal money order have the words "Pay To" and other money orders issued have the standard "Pay to the order of". Are postal money orders lawful money if paid for with lawful money?

Postal money orders are on the list of lawful money instruments with postage stamps, as I recall.

I might look for that a little later if nobody finds it ahead of me.