Specimen Envelopes of 1901 & 1908 Registered Mail Envelopes.
Used for valuable shipments.Registered mail describes letters, packets or other postal documents considered valuable and in need of a chain of custody that provides more control than regular mail. The posted item has its details recorded in a register to enable its location to be tracked, sometimes with added insurance to cover loss. Traditionally, registered mail was a manual process which gave rise to a great variety of distinctive hand stamps and registration labels. Many countries have issued special postal stationery for registered mail.(courtesy Wikipedia)
Used for valuable shipments.Registered mail describes letters, packets or other postal documents considered valuable and in need of a chain of custody that provides more control than regular mail. The posted item has its details recorded in a register to enable its location to be tracked, sometimes with added insurance to cover loss. Traditionally, registered mail was a manual process which gave rise to a great variety of distinctive hand stamps and registration labels. Many countries have issued special postal stationery for registered mail.(courtesy Wikipedia)