In the article titled “Stamp Announcement 18-13: United States Air Mail Stamp,” in Postal Bulletin 22490 (3-29-18, page 45), the United States Air Mail first-day-of-issue (FDOI) postmarks and the special dedication postmarks were unavailable.
The FDOI postmarks for the United States Air Mail stamp are now available and shown on pages 35-36. The special dedication postmarks are shown here:
Only the following pictorial postmark is permitted for the United States Air Mail stamp. The word “Station” or the abbreviation “STA” is required somewhere in the design, because it will be a temporary station.
To finalize the United States Air Mail stamp pictorial postmark art, insert the date, city, state, and ZIP Code™ of the physical location of your event adjacent to the stamp image. Overall dimensions of the pictorial postmark must not exceed 4 inches (horizontally) by 2 inches (vertically). Collectors prefer 3-1/2 inches by 1-inch dimensions.
The Postal Service™ must make all special postmarks known to collectors through advance publicity in the Postal Bulletin. Therefore, all special dedication cancellations must be reported to Stamp Services 4 weeks before the event using PS Form 413, Pictorial Postmark Announcement/ Report. To get a copy of the form, go to blue.usps.gov/formmgmt/forms/ps413.pdf.
— Stamp Services, Marketing, 4-26-18
