From my USA postal history collection, here is an example of an old express mail cover:
From: Louisville, Kentucky - Valley Station
To: Des Moines, Iowa
Postmark Date: November 1, 1994
Envelope Number: EP-13C January 1991 36USC380
Type: 15.5 inch by 12 inch Tyvek envelope
Envelope Label: 11-B 5/94
Franking: $9.95 (34 29-cent stamps plus 3 three-cent stamps)
USPS had an arrangement with EMS for international shipments and they branded the label with both names, so this same label could be used internationally.
Linus





