Talk:International Postage Meter Stamp Catalog/United States of America, Part 3

Two additional labels
In my experience I have witnessed two more shipping labels from USPS that I do not see listed/shown on this page, maybe someone can help with figuring this out First would be a Media Mail label with the letter "M" on the top corner, instead of a black box Second would be a PRSRT mail label with a letter "S" on the top corner, only seen one of those once and have a photo of it, any clue as to where it would be sorted into on this wiki? --MSTVD (discuss • contribs) 06:20, 15 May 2022 (UTC)