DescriptionNY and Washington last day RPO service June 30, 1977.jpg
Cachet cover carried on the New York/Washington RPO service on its last day of operation on June 30, 1977 from Union Station, Washington, DC to Pennsylvania Station, New York on Pennsylvania Railroad Train #4. Cancellation: CDS with RMS killer "N.Y. & WASH. R.P.O. TR 4 JUN 30 1977" Backstamp: CDS "NEW YORK, NY 10001 JUL 1 1977"
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
{{Information |description=Cachet cover carried on the New York/Washington RPO service on its last day of operation on June 30, 1977 from Union Station, Washington, DC to Pennsylvania Station, New York on Pennsylvania Railroad Train #4. Cancellation: CDS with RMS killer "N.Y. & WASH. R.P.O. TR 4 JUN 30 1977" Backstamp: NEW YORK, NY 10001 JUL 1 1977" |date=June 30. 1977 |source=Uploader's collection |author=USPOD (Stamp; cancellations); Cachet (unknown) |permission= {{PD-USGov)) (S...