United Airlines Sud Aviation Caravelle 6R Airplane Postcard CC9X Please review scans of both sides of the postcard carefully to see the details and condition of the postcard. Free US Shipping - No tracking. Your postcard will be mailed in a plastic sleeve and a cardboard photo mailer. Please allow normal USPS letter shipping times for postcards mailed without tracking. International Shipping - No Tracking. Your postcard will be mailed in a plastic sleeve and a cardboard photo mailer. Please allow Normal International letter mailing times for postcards mailed without tracking.