The USPOD did not print any messages. This card was printed by a private print shop or the sending business itself. To facilitate this, the USPOD sold mint cards in press sheets which were then printed by the print shops, then cut to postal cards size.
Jim In what price range would a cover like this fall? I have a small number of such covers from a box I've had so long I can't even remember acquiring it some decades back. lol ...maybe its time they saw the light of day somewhere else.