Addressee too funny not to look up:
"For six decades, Chicago's oddly named Green Duck Company was one of the country's leading manufacturers of campaign buttons, along with many other small metal advertising novelties......"
Quite some history:
https://www.madeinchicagomuseum.com...een-duck-co/UY7 reply side.
No dates on card, but measurements seem to be for (1915-25) Potter roll-fed rotary presses issues:
Posted 05/09/2022 7:00 pm
