These covers are common. I have passed up literally hundreds of these on eBay during the last twenty years, yet their simple beauty has been growing on me lately. They are the perfect sample from which to study slogans. I love it when I have several covers from the same sender to the same adressee.
This slogan reads "More and better propaganda, December 4, propaganda day"
"Use the pay on receipt service"
A repeat of the slogan shown above.
Slogan reads "San Martin consolidated the freedom of America with his sword"
Another copy with this slogan.
