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Table of Contents

All Document Indexes	Railway Post Office (RPO) Cover with Washington-Head Stamp
Introduction	Railway Post Office (RPO) Cover Addressed to Denmark
U. S. Three Cent Stamp	Illegal Use of Savings Stamp on Cover
Mr. ZIP	Illegal Use of Revenue Stamp on Cover
U. S. Parcel Post Stamp Used for First Class on Cover	Orange County, California Postal History
U. S. Five Dollar Stamp of 1922	U. S. Special Delivery Stamp
Example of American Flag Machine Cancellation	Swiss Airmail Stamp
Christmas Seals Used on a Postcard 'Tied' by a Cancellation Device	Ralph Williams Ford License Plate Holder, c. 1965
Perfection Mechanized Handstamp	Early Teddy Bear Postcard
Washington-Head Stamps	Early Return Address Labels
Privately Perforated Washington-Head Stamp

Mr. ZIP

Mr. ZIP Stamp Sheet Selvage

Mr. ZIP Stamp Sheet Selvage

These images were scanned from the selvage of blocks of stamps issued by the United States. The Mr. ZIP character was used by the Postal Service to advertise the idea of the Zone Improvement Plan (ZIP) postal coding system. Mr. ZIP appeared on several stamps and stamp-related publicity items. This image comes from the 1970's.

For many years, the Postal Service has been placing non-stamp images in the selvage (paper areas outside the stamp images, near the edge of the sheet) with printing plate numbers, copyright notices, slogans, and other markings. Examples of the messages include "MAIL EARLY IN THE DAY" and "USE ZIP CODE".

Collectors have accumulated blocks of stamps with plate number markings for many years. These additional markings, however, are quite common, and are priced lower than plate numbers in the Scott catalog.

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6/16/23, 11:41 AM