In the article “Stamp Announcement 17-9: Oscar de la Renta Stamp,” in Postal Bulletin 22459, (1-19-17, pages 50-51), the Special Dedication Postmarks were not available. Also, the press sheet dimensions were not listed in the technical details table.
The press sheet dimensions and the information and graphics for the Oscar de la Renta Special Dedication Postmarks are shown here:
Only the following pictorial postmark is permitted for the Oscar de la Renta stamp. The word “Station” or the abbreviation “STA” is required somewhere in the design, because it will be a temporary station.
To finalize the Oscar de la Renta 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 the dimensions 3-1/2 inches by 1.
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 four weeks before the event using PS Form 413, Pictorial Postmark Announcement/Report. To get a copy of the form, go to http://blue.usps.gov/formmgmt/forms/ps413.pdf.
— Stamp Services, Marketing, 2-2-17