Gentle suggestion, when asking about an item or two, please show just the item(s) you have questions about and crop-out the clutter.
Moving on, assuming you are asking about the 2 U.S. stamps .... they both have an advertising slogan machine cancels to encourage to use of the airmail. They can appear on any kind of machinable mail. They do not change anything about the rate/cost/service given to any mail piece with this cancel, which was used in several dozen cities over a span of more than a decade.

This thread has a lot more information on this cancel type:
https://www.stampcommunity.org/topi...PIC_ID=36941