An accumulation of 20,000 slogan postmarks will be sold by town, region and province. Stay tuned.

1903, Pense Saskatchewan cds ties 5c Edward on 2c PSE paying 7c Empire Registered to New Zealand. San Francisco Exchange Label overtop. These special labels used by the U.S. Post Office Dept was used to clearly catch eyes and account for pieces of international registered mail.  The production and use of these labels resulted from the implementation of an 1882 UPU resolution requiring that international registered mail matter bear a label or impression of a stamp with a capital letter R in Roman text.

The U.S. Post Office Dept opted for gummed labels which were produced through the joint efforts of the Government Printing Office and the Bureau of Engraving and Printing.

The use of these labels by those post offices authorized to handle inbound and outbound foreign registered mail became effective on January 1, 1883 and stayed in effect until January 24, 1911.  San Francisco was designated “exchange office” and the labels have thus come to be known as “exchange labels.”